Knowledge Resource Center for Ecological Environment in Arid Area
DOI | 10.1007/s40415-020-00666-9 |
Physiological and antioxidative responses associated with drought tolerance of Lasiurus sindicus Henr. endemic to Thar desert, India | |
Goswami, Bhuwnesh; Rankawat, Rekha; Gadi, B. R. | |
通讯作者 | Gadi, BR |
来源期刊 | BRAZILIAN JOURNAL OF BOTANY
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ISSN | 0100-8404 |
EISSN | 1806-9959 |
出版年 | 2020 |
卷号 | 43期号:4页码:761-773 |
英文摘要 | Sewan (Lasiurus sindicus Henr.) is an endemic fodder grass of low rainfall sandy habitat of hot Indian Thar desert. To understand drought responses and tolerance mechanism in Lasiurus sindicus, seedling growth, root cell viability, changes in enzymatic antioxidants and oxidative injury were assayed at early stage of seedlings in polyethylene glycol (PEG) 6000 (5, 10 and 20%)-induced drought stress. The reduction of seed germination, seedling growth, relative water content and vigor index was found with high level of PEG (10-20%), while 5% PEG slightly increased the germination and the growth parameters. A decline in pigments (Chl a, Chl b, total Chl, carotenoids), chlorophyll stability index, membrane stability index and protein content was observed, which was correlated with increased level of malondialdehyde, an indicator of excess reactive oxygen species. Results showed that increasing level of PEG activated the antioxidative enzymes, superoxide dismutase, peroxidase and catalase. Non-enzymatic antioxidants (ascorbate, phenols) and accumulation of cytosolutes (proline and sugar) for regulation of growth, osmotic potential and reactive oxygen species in drought tolerance. Overall results showed that seeds have adaptive mechanisms for germination and growth under lower level of drought, while increasing drought stress reduced growth potential of L. sindicus. It exhibited drought tolerance features, enhancement in activity of antioxidative enzyme and cytosolutes accumulation which involved in regulation of oxidative damage and osmotic adjustment for survival of the seedlings. Furthermore, our results provide important information about the physiological and antioxidative responses of the seedlings and mechanism associated with drought tolerance of L. sindicus. |
英文关键词 | Antioxidant system Cell viability Cytosolutes Membrane stability Vigor |
类型 | Article |
语种 | 英语 |
收录类别 | SCI-E |
WOS记录号 | WOS:000584024400001 |
WOS关键词 | EARLY SEEDLING GROWTH ; CHLOROPHYLL FLUORESCENCE ; BIOCHEMICAL PARAMETERS ; MEMBRANE-PERMEABILITY ; SALICYLIC-ACID ; STRESS ; SALT ; GERMINATION ; ENZYMES |
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/2XILL650/328420 |
作者单位 | [Goswami, Bhuwnesh; Rankawat, Rekha; Gadi, B. R.] Jai Narain Vyas Univ, Stress Physiol & Mol Biol Lab, Dept Bot, Ctr Adv Study CAS, New Campus, Jodhpur 342005, Rajasthan, India |
推荐引用方式 GB/T 7714 | Goswami, Bhuwnesh,Rankawat, Rekha,Gadi, B. R.. Physiological and antioxidative responses associated with drought tolerance of Lasiurus sindicus Henr. endemic to Thar desert, India[J],2020,43(4):761-773. |
APA | Goswami, Bhuwnesh,Rankawat, Rekha,&Gadi, B. R..(2020).Physiological and antioxidative responses associated with drought tolerance of Lasiurus sindicus Henr. endemic to Thar desert, India.BRAZILIAN JOURNAL OF BOTANY,43(4),761-773. |
MLA | Goswami, Bhuwnesh,et al."Physiological and antioxidative responses associated with drought tolerance of Lasiurus sindicus Henr. endemic to Thar desert, India".BRAZILIAN JOURNAL OF BOTANY 43.4(2020):761-773. |
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