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Responses of Transgenic Tobacco Plants with Increased Proline Content to Drought and/or Heat Stress
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SYSNO ASEP 0369947 Druh ASEP J - Článek v odborném periodiku Zařazení RIV J - Článek v odborném periodiku Poddruh J Ostatní články Název Responses of Transgenic Tobacco Plants with Increased Proline Content to Drought and/or Heat Stress Tvůrce(i) Pospíšilová, Jana (UEB-Q) RID
Haisel, Daniel (UEB-Q) RID, ORCID
Vaňková, Radomíra (UEB-Q) RID, ORCIDZdroj.dok. American Journal of Plant Sciences - ISSN 2158-2742
Roč. 2, č. 3 (2011), s. 318-324Poč.str. 7 s. Jazyk dok. eng - angličtina Země vyd. US - Spojené státy americké Klíč. slova Carotenoids ; Chlorophyll ; Net Photosynthetic Rate Vědní obor RIV ED - Fyziologie CEP GA522/09/2058 GA ČR - Grantová agentura ČR CEZ AV0Z50380511 - UEB-Q (2005-2011) DOI 10.4236/ajps.2011.23036 Anotace Transgenic tobacco plants (M51-1) constitutively over-expressing a modified gene for the proline biosynthetic enzyme delta2-pyrroline-5-carboxylate synthetase (P5CSF129A) and the corresponding wild-type plants (WT) were compared during drought or heat stress and under combination of both stresses. The proline content in M51-1 was several times higher than in WT plants. Under optimal conditions, the transpiration rate and stomatal conductance of M51-1 plants were lower than those in WT plants. The differences in net photosynthetic rate were not significant and water use efficiency and contents of chlorophyll and xanthophyll cycle pigments were higher in M51-1 than in WT plants. Drought induced by cessation of watering for 7 d resulted in decrease of all gas exchange parameters and chlorophyll content, but in an increase of the content of xanthophyll cycle pigments and degree of their de-epoxidation. Pracoviště Ústav experimentální botaniky Kontakt David Klier, knihovna@ueb.cas.cz, Tel.: 220 390 469 Rok sběru 2012 Elektronická adresa http://www.scirp.org/journal/PaperInformation.aspx?paperID=7576
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