Knowledge Resource Center for Ecological Environment in Arid Area
DOI | 10.1016/j.plaphy.2017.07.026 |
Photosynthetic limitation and mechanisms of photoprotection under drought and recovery of Calotropis procera, an evergreen C-3 from arid regions | |
Rivas, Rebeca1; Frosi, Gabriella1; Ramos, Diego G.1; Pereira, Silvia1; Benko-Iseppon, Ana M.2; Santos, Mauro G.1 | |
通讯作者 | Santos, Mauro G. |
来源期刊 | PLANT PHYSIOLOGY AND BIOCHEMISTRY
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ISSN | 0981-9428 |
出版年 | 2017 |
卷号 | 118页码:589-599 |
英文摘要 | Calotropis procera is a C-3 plant native from arid environmental zones. It is an evergreen, shrubby, non woody plant with intense photosynthetic metabolism during the dry season. We measured photosynthetic parameters and leaf biochemical traits, such as gas exchange, photochemical parameters, A/C-i analysis, organic solutes, and antioxidant enzymes under controlled conditions in potted plants during drought stress, and following recovery conditions to obtain a better insight in the drought stress responses of C. procera. Indeed, different processes contribute to the drought stress resilience of C procera and to the fast recovery after rehydration. The parameters analyzed showed that C. procera has a high efficiency for energy dissipation. The photosynthetic machinery is protected by a robust antioxidant system and photoprotective mechanisms such as alternative pathways for electrons (photorespiration and day respiration). Under severe drought stress, increased stomatal limitation and decreased biochemical limitation permitted C procera to maintain maximum rate of Rubisco carboxylation (V-c,(max)) and photosynthetic rate (A(max)). On the other hand, limitation of stomatal or mesophyll CO2 diffusion did not impair fast recovery, maintaining Vc,max, chloroplast CO2 concentration (C-c) and mesophyll conductance (g(m)) unchanged while electron flow used for RuBP carboxylation (J(c)) and Amax increased. The ability to tolerate drought stress and the fast recovery of this evergreen C-3 species was also due to leaf anti oxidative stress enzyme activity, and photosynthetic pigments. Thus, these different drought tolerance mechanisms allowed high performance of photosynthetic metabolism by drought stressed plants during the re-watering period. (C) 2017 Elsevier Masson SAS. All rights reserved. |
英文关键词 | A/C-i analysis Gas exchange Oxidative stress Photosynthetic metabolism Sugars metabolism Water deficit |
类型 | Article |
语种 | 英语 |
国家 | Brazil |
收录类别 | SCI-E |
WOS记录号 | WOS:000411169500060 |
WOS关键词 | JATROPHA-CURCAS PLANTS ; CHLOROPHYLL FLUORESCENCE ; WATER DEFICITS ; STRESS ; LEAVES ; SUGARS ; INTENSITIES ; PEROXIDASE ; METABOLISM ; EFFICIENCY |
WOS类目 | Plant Sciences |
WOS研究方向 | Plant Sciences |
资源类型 | 期刊论文 |
条目标识符 | http://119.78.100.177/qdio/handle/2XILL650/201566 |
作者单位 | 1.Univ Fed Pernambuco, Dept Bot, Lab Fisiol Vegetal, BR-50670901 Recife, PE, Brazil; 2.Univ Fed Pernambuco, Dept Genet, Lab Genet & Biotecnol Vegetal, BR-50670901 Recife, PE, Brazil |
推荐引用方式 GB/T 7714 | Rivas, Rebeca,Frosi, Gabriella,Ramos, Diego G.,et al. Photosynthetic limitation and mechanisms of photoprotection under drought and recovery of Calotropis procera, an evergreen C-3 from arid regions[J],2017,118:589-599. |
APA | Rivas, Rebeca,Frosi, Gabriella,Ramos, Diego G.,Pereira, Silvia,Benko-Iseppon, Ana M.,&Santos, Mauro G..(2017).Photosynthetic limitation and mechanisms of photoprotection under drought and recovery of Calotropis procera, an evergreen C-3 from arid regions.PLANT PHYSIOLOGY AND BIOCHEMISTRY,118,589-599. |
MLA | Rivas, Rebeca,et al."Photosynthetic limitation and mechanisms of photoprotection under drought and recovery of Calotropis procera, an evergreen C-3 from arid regions".PLANT PHYSIOLOGY AND BIOCHEMISTRY 118(2017):589-599. |
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