Prof. Maya Velitchkova, PhD | Publications

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  1. Velitchkova, M, Borisova, P, Vasilev, D., Popova, A. V. (2021) Different impact of high light on the response and recovery of wild type and lut2 mutant of Arabidopsis thaliana at low temperature. Theor. Exp. Plant Physiol., 33, 95-111.
  2. Georgieva, K., Mihailova, G., Gigova, L., Dagnon, S., Simova-Stoilova, L., Velitchkova, M. (2021) The role of antioxidant defense in freezing tolerance of resurrection plant Haberlea rhodopensis. Physiol. Mol. Biol. Plants, 27, 1119-1133.
  3. Velitchkova, M., Popova, A.V., Gerganova, M, Faik, A, Ivanov, A.G. (2020) Low temperature and high light dependent dynamic photoprotective strategies in Arabidopsis thaliana. Physiol. Plant., 170, 93-108.
  4. Georgieva, K., Mihailova, G., Velitchkova, M., Popova, A.(2020) Recovery of photosynthetic activity of resurrection plant Haberlea rhodopensis from drought- and freezing-induced desiccation. Photosynthetica, 58 (4), 2020, 911-921.
  5. Mihailova, G., Solti, A., Sarvari, E., Keresztes, A., Raparini, F., Velitchkova, M, Aleksandrov, V., Georgieva, K. (2020) Freezing tolerance of photosynthetic apparatus in the homoiochlorophyllous resurrection plant Haberlea rhodopensis. Environ. Exp. Bot., 178, 104157.
  6. Milena Gerganova, Aygyun Faik, Maya Velitchkova (2019) Acquired tolerance of the photosynthetic apparatus to photoinhibition as a result of growing Solanum lycopersicum at moderate higher temperature and light intensity. Funct. Plant Biol. 46(6) 555-566.
  7. Antoaneta V. Popova, Konstantin Dobrev, Maya Velitchkova, Alexander G. Ivanov (2019) Differential temperature effects on dissipation of excess light energy and energy partitioning in lut2 mutant of Arabodopsis thaliana under photoinhibitory conditions. Photosynth. Res. 139: 367-385.
  8. Мая Величкова, Анелия Добрикова, Радка Владкова, Емилия Апостолова, Александър Иванов, Антоанета Попова (2018) ФОТОСИНТЕЗА – ПОСТИЖЕНИЯ И ПРЕДИЗВИКАТЕЛСТВА. Списание на БАН, т.3, 38-44.
  9. Maida Jusovic, Maya Y. Velitchkova, Svetlana P. Misheva, Andreas Börner, Emilia L. Apostolova, Anelia G. Dobrikova (2018) Photosynthetic Responses of a Wheat Mutant (Rht-B1c) with Altered DELLA Proteins to Salt Stress. J. Plant Growth Reg. 37(2), pp. 645-656. DOI: https://doi.org/10.1007/s00344-017-9764-9.
  10. ImenLahmar, GretaRadeva, DessislavaMarinkova, MayaVelitchkova, Hafedh Belghith, Ferjani Ben Abdallah, LyubovYotova, KarimaBelghith (2018) Valorization of a plant β-amylase: Immobilization and dataset on the kinetic process. Data in Brief, 16, 386-391, https://doi.org/10.1016/j.dib.2017.11.071
  11. Imen Lahmar, Greta Radeva, Dessislava Marinkova, Maya Velitchkova, Hafedh Belghith, Ferjani Ben abdallah, Lyubov Yotova, Karima Belghith (2018) Immobilization and topochemical mechanism of a new β-amylase extracted from Pergularia tomentosa. Process Biochemistry 64, 143-151. https://doi.org/10.1016/j.procbio.2017.09.007.
  12. Faik  Aygyun, Daniela Stanoeva, Maya Velitchkova (2018) High light enhanced the inhibitory effect of suboptimal temperatures on oxygen evolving reactions in Arabidopsis thaliana. C. R. Bulg Acad. Sci. 71, 211-219.
  13. Ivanov Alexander G., Maya Y. Velitchkova, Suleyman I. Allakhverdiev, Norman P. A.Huner (2017) Heat stress-induced effects of photosystem I: an overview of structural and functional responses. Photosynth. Res. 133, 17-30. DOI 10.1007/s11120-017-0383-x.
  14. Picorel Rafael, Alfonso Miguel, Velitchkova Maya (2017) Editorial: Molecular Basis of the Response of Photosynthetic Apparatus to Light and Temperature Stress. Front. Plant Sci., 8, 288. http://journal.frontiersin.org/article/10.3389/fpls.2017.00288, DOI=10.3389/fpls.2017.00288   ISSN=1664-462X.
  15. Gerganova M., Daniela Stanoeva, Antoaneta V. Popova, Maya Velitchkova (2017) Alterations in pigment content and photosynthetic performance of Arabidopsis thaliana plants under combined action of low temperature and high light. C. R. Bulg Acad. Sci.. 70 (9) 1255-1261.
  16. Faik, A., Dimitar Vasilev, Daniela Stanoeva, Maya Velitchkova (2017) Suboptimal growth temperature and light intensity effects on Photosystem II activity and oxygen evolution of tomato (Solanum lycopersicum) C. R. Bulg Acad. Sci. 70 (9) 1247-1254.
  17. Gerganova M., D. Stanoeva, A. Popova, M.Velitchkova (2016) Pigment content and oxygen evolution of tomato plants as affected by long term treatment at suboptimal temperature” C. R. Bulg Acad. Sci., 69 (11) 1429-1436.
  18. Faik A., A.V. Popova, M. Velitchkova (2016) Effects of long term action of high temperature and high light on the activity and energy interaction of both photosystems in tomato plants Photosynthetica 54 (4) 611-619.
  19. Gerganova M., A. Popova, D. Stanoeva, M. Velitchkova (2016) Tomato plants acclimate better to elevated temperature and high light than to treatment with each factor separately. Plant Physiol. Biochem. 104, 234-241.
  20. Dobrev K., D. Stanoeva, M. Velitchkova, A V. Popova (2016) The lack of lutein accelerates the extent of light-induced bleaching of photosynthetic pigments in thylakoid membranes of Arabidopsis thaliana. Photochem. Photobiol. 92, 436-445.
  21. Dobrev K., D. Stanoeva, M. Velitchkova, A V. Popova (2015) Alterations in primary photosynthetic reactions of Arabidopsis thaliana, wt and lut2, under photoinhibition in vivo.  C. R. Bulg Acad. Sci. 68 (5) 601-608.
  22. Mihailova G., M. Velitchkova, V. Doltchinkova, D. Lazarova, K. Georgieva (2015) Photosynthetic characteristics of the resurrection plant Haberlea Rhodopensis from two habitats. Genetics and Plant Physiol. 5(1) 74–85.
  23. Sárvári Éva, Gergana Mihailova, Ádám Solti, Áron Keresztes, Maya Velitchkova, Katya Georgieva (2014) Comparison of thylakoid structure and organization in sun and shade Haberlea rhodopensis populations under desiccation and rehydration. J. Plant Physiol. 151, 1591-1600.
  24. Ivanov A.G., M. Velitchkova (2014) Mechanisms of Stimulation of Photosystem I Activity in Chloroplast Membranes Under Heat Stress. Correlation Between P700 Photooxidation and Thermostability of Thylakoid Membrane Organization. In: Contemporary problems of photosysnthesis (S. I. Allakhverdiev, A. B.Rubin and V. A.Shuvalov Eds).  Moscow–Izhevsk: Izhevsk Institute of Computer Science, Vol. II, pp. 377-396. ISBN 978-5-4344-0183-8 (vol. II).
  25. Lazarova D., D. Stanoeva, A. Popova, D. Vasilev and M. Velitchkova (2014) UV-B – induced alteration of oxygen evolving reactions in pea thylakoid membranes as affected by scavengers of reactive oxygen species. Biol. Plant. 58 (2) 319-327.
  26. Velitchkova M., Daniela Stanoeva, Antoaneta V. Popova (2013) UV-B induced alteration in primary photosynthetic reactions in isolated thylakoid membranes from Arabidopsis thaliana (C24). C. R. Bulg Acad. Sci. 66 (11) 1553-1561.
  27. Velitchkova M., D. Stanoeva, A. V. Popova (2013) Sensitivity of two ecotypes of Arabidopsis Thaliana (Cvi and Te) towards UV-B irradiation. C. R. Bulg Acad. Sci. 66 (6) 839-846.
  28. Velitchkova M., V. Dolchinkova, D. Lazarova, G. Mihailova, S. Doncheva, K. Georgieva (2013) Effect of high temperature on dehydration-induced alterations in photosynthetic characteristics of the resurrection plant Haberlea rhodopensis. Photosynthetica, 51, 2013, 630-640.
  29. Dobrikova A., R. Vladkova, D. Stanoeva, A. Popova, M. Velitchkova (2013) Effects of 24-epibrassinolide pre-treatment on UV-B induced changes in the pigment content of pea leaves. C. R. Bulg Acad. Sci, 66 (4) 543-550.
  30. Velitchkova M., D. Lazarova, G. Mihailova, D. Stanoeva, V. Dolchinkova and K. Georgieva (2013) Characterization of Energy Transfer Processes and Flash Oxygen Yields of Thylakoid Membranes Isolated from Resurrection Plant Haberlea rhodopensis Subjected to Different Extent of Desiccation, in: Photosynthesis Research for Food, Fuel and Future (Eds. Tingyun Kuang, Congming Lu, Lixin Zhang);15th International Conference on Photosynthesis, August 22-27, 2010, Beijing, China, pp. 531-534.
  31. Çiçek N., I. Fedina, H. Çakırlar, K. Georgieva, M. Velitchkova (2012) The role of short-term high temperature pre-treatment on UV-B tolerance of barley cultivars. Turk. J. Agron. Forest. 36, 153-165.
  32. Andreeva A., I. Apostolova, M. Velitchkova (2011) Temperature dependence of resonance Raman spectra of carotenoids, Spectrochimica Acta Part A: Molecular and Biomolecular Spectroscopy. 78 (4), pp. 1261-1265.
  33. Fedina I., , J. Hidema, M. Velitchkova, K. Georgieva, D. Nedeva (2010)  UV-B induced stress responses in three rice cultivars, Biol. Plant. 54 (3): 571-574, 2010
  34. Andreeva A., M. Velitchkova (2009) Resonance Raman studies of carotenoid molecules within photosystem I particles. Biotechnol. Biotechnol. Equip. 23, SE, 488-492.
  35. Lazarova D., A. Popova, D. Stanoeva, M. Velitchkova (2009) Involvement of reactive oxygen radicals in photoinhibition of primary photosynthetic reactions-effects of temperature and oxygen radical scavengers. Biotechnol. Biotechnol. Equip. 23, SE, 511-515.
  36. Fedina I., Velitchkova M. (2009) Physiological Responses of Higher Plants to UV-B Radiation, In: “Climate Changes and Crops” (Singh S.N. Ed.) Springer, pp. 283-306.
  37. Fedina I. , D. Nedeva, K. Georgieva, M. Velitchkova (2009) Methyl jasmonate counteract UV-B stress in barley seedlings. J. Agron. Crop Sci. 195 (3), 204-212.
  38. Fedina I., M. Velitchkova, K. Georgieva, D. Nedeva and H. Çakırlar (2009) UV-B response of greening barley seedlings. Acta Biol. Hungarica 60 (2) 195-210.
  39. Velitchkova M., S. Abarova, D. Lazarova, K. Stoichkova, D. Stanoeva and A. Andreeva (2009) Protective effect of histidine against pigment photobleaching in photosystem I particles. J. Optoelectron. Adv. Mat., 11(9) 1230-1233.
  40. Velitchkova M., D. Lazarova and A. Popova (2009) Response of isolated thylakoid membranes with altered fluidity to short time heat stress. Physiol. Mol. Biol. Plants, 15 (1) 43-52.
  41. Doncheva Sn., C. Poschenrieder, Zl. Stoyanova, K. Georgieva, M. Velichkova, J. Barceló. (2009) Silicon amelioration of manganese toxicity in Mn-sensitive and Mn-tolerant maize varieties. Environm. Exp. Botany, 65, 189-197.
  42. Çakırlar H., N.Çiçek, I. Fedina, K. Georgieva, A.Doğru, M. Velitchkova (2008) NaCl Induced Cross-Acclimation to UV-B Radiation in Four Barley (Hordeum vulgare L.) Cultivars. Acta Physiol. Plant. 30, 561-567.
  43. Andreeva A., S. Abarova, K. Stoichkova, R. Picorel, M. Velitchkova (2007) Selective Photobleaching of Chlorophylls and Carotenoids in Photosystem I Particles under High-Light Treatment. Photochem. Photobiol. 83, 1301-1307.
  44. Fedina I., M. Velitchkova, K. Georgieva, K. Demirevska, L. Simova (2007) UV-B response of green and etiolated barley seedlings. Biol. Plant. 51, 699-706.
  45. Komayama K., Khatoon M., Takenaka D., Horie J., Yamashita A., Yoshioka M., Nakayama, Y., Yoshida M.,  Ohira S., Morita N., Velitchkova M., Enami I., Yamamoto Y. (2007) Quality control of Photosystem II: cleavage and aggregation of heat-damaged D1 protein in spinach thylakoids. Biochim. Biophys. Acta: Bioenergetics , 1767, 838-846.
  46. Andreeva A., S. Abarova, K. Stoichkova, M. Velitchkova (2007) Light induced changes in Raman scattering of carotenoid molecules in Photosystem I particles. SPIE v. 6604,66042M.
  47. Popova A., M. Velitchkova, Y. Zanev (2007) Effect of membrane fluidity on photosynthetic oxygen production reactions. Z. Naturforsch. 62 c, 253-260.
  48. Fedina, K. Georgieva, M. Velitchkova, I. Grigorova (2006) Effect of pretreatment of barley seedlings with different salts on the level of UV-B induced and UV-B absorbing compounds. Environm. Exp. Bot., 56, 225-230.
  49. Fedina I., E. Hassan, K, Gergieva, M. Velitchkova, I. Grigorova (2006) Effect of chloramphenicoland cycloheximide on the level of UV-B induced compunds in barley seedlings. Egypt. J. of Appl. Sci. 21, 17-29.
  50. Abarova S., Velitchkova, A. Andreeva (2006) Changes in spectral properties of pigment molecules in photosystem I particles under high light treatment. Meetings in Physics at Unversity of Sofia (A. Proykova ed.) vol. 7, 1-6, Heron Press, Sofia.
  51. Velitchkova M., A. Popova (2005) High light induced changes of 77K fluorescence emission of pea thylakoid membranes with altered membrane fluidity, Bioelectrochem. 67 (1) 81-90.
  52. Andreeva A., M. Velitchkova (2005) Resonance Raman Spectroscopy of carotenoids in Photosystem I particles. Biophys. Chem. 114, 129-135.
  53. Fedina I., M. Velitchkova, K. Georgieva, I. Grigorova (2005) UV-B-induced compounds as affected by proline and Nacl in Hordeum vulgare L. cv. Alfa. Environm. Exp. Bot. 54 (2), 182-191.
  54. Popova A., M. Velitchkova (2004) Effect of membrane lipid order on the degree of freezing damage of thyalkoid membranes. Cryo-Letters, 25, 255-264.
  55. Velitchkova M., R. Picorel (2004) Photobleaching of photosynthetic pigments in spinach thylakoid membranes. Effect of temperature, oxygen and DCMU. Biophys. Chem., 107, 25-32.
  56. Velitchkova M., I. Yruela, M. Alfonso, P. Alonso, R. Picorel (2003) Different kinetics of photoinactivation of photosystem I-mediated electron transport and P700 in isolated thylakoid membranes. J. Photochem. Photobiol. B, 69 (1) 41-48.
  57. Velitchkova M., A. Popova, Tz. Markova (2001) Effect of membrane fluidity on photoinhibition of isolated thylakoid membranes at room and low temperature. Z. Naturforsch. 56c, 369-374.
  58. Markova Tz., I. Zaharieva, A. Popova. M. Busheva, M. Velitchkova (2001) Alteration of the thylakoid membrane fluidity reflects on the degree of photoinhibition at low temperature in vitro. In: Plants of the Balkan Peninsula: into the next Millenium, (N. Gozukirmizi ed.) v. II, 103-108.
  59. Andreeva A.,  M. Velitchkova (2000) Polarized fluorescence spectroscopy of oriented isolated spinach photosystem I particles. Photosynth. Res. 65 (1) 15-28.
  60. Markova Tz., M. Busheva, A. Popova, M. Velitchkova, N. Naydenova, E.Apostolova, (2000) Characteristics of pea chlorophyll mutants. II. Photochemical and physicochemical characteristics of pea mutant with reduced chlorophyll content. Comp. Rend. Bulg. Acad. Sci. vol. 53, No 4, 101-104.
  61. Markova Tz., A. Popova, M. Busheva, M. Velitchkova, N. Naydenova, E.Apostolova (1999) Characteristics of pea chlorophyll mutants. I. Photochemical and physicochemical characteristics of pea mutant with higher chlorophyll content. Comp. Rend. Bulg. Acad. Sci, vol. 52, No 3-4, 97-100.
  62. Zaharieva I., Tz. Markova and M. Velitchkova (1998) Thylakoid membrane fluidity changes the response of isolated pea thylakoids to high temperature. In: Photosynthesis: Mechanisms and Effects (G. Garab ed). Kluwer Academic Publishers, Dordrecht, Boston, London. v.III, pp. 1823-1826.
  63. Zaharieva I., M. Velitchkova and V. Goltsev (1998) Effect of cholesterol and benzyl alcohol on prompt and delayed chlorophyll fluorescence in thylakoid membranes. In: Photosynthesis: Mechanisms and Effects (G. Garab ed). Kluwer Academic Publishers, Dordrecht, Boston, London. v.III, pp. 1827-1830.
  64. Ivanov A. G., R. M. Morgan, G. R . Gray, M. Y. Velitchkova, N. P. A. Huner (1998) Temperature/light dependence development of selective resistance to photoinhibition of photosystem I. FEBS Lett. 430 288-292.
  65. Andreeva A., M. Y. Velitchkova (1998) Orientation of optical transitions of pigments in isolated photosystem I particles, SPIE v. 3573, 243-246.
  66. Busheva M., M. Velitchkova, Tz. Markova, Y. Zanev (1998) Effects of cholesterol and benzyl alcohol on fluorescence transient of pea thylakoids. J. Photochem Photobiol. B. Biology 42(3) 240-244.
  67. Andreeva A., M. Velitchkova (1998) Mutual orientation of absorbing chromophores and long wavelengths pigments in Photosystem I, Spectrochimica Acta Part A 54, 639-644.
  68. Velitchkova M., I. Fedina (1998) Response of Photosynthesis of Pisum sativum to Salt Stress as affected by Methyl Jasmonate. Photosynthetica, 35 (1) 89-97.
  69. Dobrikova A., N. Tuparev, I. Krasteva, M. Busheva, M. Velitchkova (1997) Artificial alteration of pea thylakoid membrane fluidity and its effects on energy distribution between both photosystems, Z. Naturforsch. 52c, 485-490.
  70. Andreeva A. and M. Velitchkova (1995) An estimation of the mean phonon quanta energy for photosystem I, In: Electronic, optoelectronic and magnetic thin films (J. M. Marshall, N. Kirov and A. Vavrek eds) John Wiley&Sons Inc., 515-518.
  71. Velitchkova M. Y., T. R. Lazarova, Y. Zanev (1995) Trypsin-induced changes in energy distribution between photosystem I and photosystem II in pea thylakoid membranes, Bioelectrochem. Bioenerg., 37, 69-72.
  72. Velitchkova M. Y., R. Carpentier (1994) Variable thermal dissipation in a Photosystem I submembrane fraction, Photosynth. Res. 40, 263-268.
  73. Lazarova Tz., M. Velitchkova (1993) Spin label study of apomembranes and purple membranes, Z Naturforsch. 48c, 500-503.
  74. Velitchkova M. Y., A. G. Ivanov (1993) Effects of short – time heat stress on the parameters of cation induced increase of chlorophyll fluorescence in pea thylakoid membranes, J. Plant Physiol. 142, 144-150.
  75. Velitchkova M., A. Ivanov (1992) Mechanism of photosystem I activity stimulation in trypsin – treated pea chloroplast membranes, Bioelectrochem. Bioenerg. 27, 27 – 32.
  76. Ivanov A., M. Bucheva, M. Velitchkova (1990) Surface charge density changes in isolated Photosystem II membranes induced by depletion of extrinsic polypeptides of oxygen evolving system,  Z. Naturforsch. 45c, 627 – 632.
  77. Ivanov A., M.Velitchkova (1990) Heat induced changes of the efficiency of P700 photooxidation in pea chloroplast membranes, J.Photochem.Photobiol. B, 4, 307 – 320.
  78. Velitchkova M., A. Ivanov, R. Petkova (1989) Mechanism of heat induced stimulation of PS I activity in pea chloroplast, In “Techniques and New Developments in Photosynthesis Research” (J. Barber and R. Malkin eds.), NATO ASI, v.168, p.587.
  79. Velitchkova M., A. Ivanov, A. Christov (1989) Ultrastructural and fluorescence properties of granal and stromal membranes exposed to heat stress, Photosynthetica, 23 (1), 360-363.
  80. Ivanov A., M. Velitchkova, D. Kafalieva (1987) Multiple effects of trypsin and heat treatment on the ultrastructure and surface charge density of pea chloroplast membranes. Influence on P700+ parameters, Progress Photosynth. Res., v.II, 741 -744.
  81. Velitchkova M., A. Ivanov (1988) Light intensity dependence of P700 photooxidation in heat stressed pea chloroplasts, In “Electromagnetic fields and biomembranes” (M. Blank and M. Markov eds.), Plenum Press, 245 – 248.
  82. Ivanov A., M. Velitchkova (1987) Phospholipase A2-induced changes in the physical state of pea chloroplast membranes. Influence on the P700 photooxidation., In “Plant Metabolism Regulation” (T. Kudrev ed.), Sofia, 114 – 118.
  83. Ivanov A., M. Velitchkova, D. Kafalieva (1986) Structural and P700+ heat induced changes of pea chloroplast membranes. Fluorescence and ESR study. In “Energy transfer in condensed matter” (P. Pancoska and J.Pantoflicek eds.), Prague, 200 -201.
  84. Ivanov A., M. Velitchkova, D. Kafalieva (1986) Heat induced changes in PSI reaction center in pea chloroplast membranes, Comp. Rend. Bulg. Acad. Sci., 39, N10, 123-126.
  85. Velitchkova M., D. Kafalieva (1984) Participation of the Mg2+ – pool in the primary photochemical reactions of photosynthesis. An ESR study Comp. Rend. Bulg. Acad. Sci., 37, N1, 117 – 120.
  86. Кафалиева Д., М. Бушева, М. Френска (1979) Изменение на фотоиндуцирания протонен градиент в етиопласт. Материали на IX Национален преглед на ТНТМ, София, пп. 27-29.
  87. Frenska M., D. Kafalieva (1978) Variations in the photo-induced proton transfer depending on the intactness of chloroplast membrane, Comp. Rend. Bulg. Acad. Sci.,31, N4, 465 -468.

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