Effect of short-term heat stress on growth, physiology and antioxidative defence system in wheat seedlings

Gupta, N. K.; Agarwal, Shubhi; Agarwal, V. P.; Nathawat, N. S.; Gupta, Swati; Singh, Govind

doi:10.1007/s11738-013-1221-1

Cited by 135 publications

(88 citation statements)

References 20 publications

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“…Wheat is commercially one of the most important cereal crops, especially in tropical, subtropical, temperate countries. High temperature is one of the most important constraints for wheat growth and development (Gupta et al 2013). Plant productivity is a result of many processes that modulate the photosynthetic machinery in order to maintain functional equilibrium (Tikkanen and Aro 2012).…”

Section: Introductionmentioning

confidence: 99%

Alterations in photochemical efficiency of photosystem II in wheat plant on hot summer day

Mathur

Jajoo

2014

Physiol Mol Biol Plants

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In this study the effect of increasing temperature on photochemical efficiency of PS II in wheat plants has been studied on a hot summer day (9:00 AM (Control)-7:00 PM) by measuring Chl a fluorescence. Increasing temperature for a short period of time (2-4 h), in nature affects the efficiency of PS II complex reversibly and does not cause permanent damage to any of the components of photosystem II. A scheme has been provided to demonstrate the sequence and severity of events which get affected maximum by temperature stress.

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Section: Introductionmentioning

confidence: 99%

Alterations in photochemical efficiency of photosystem II in wheat plant on hot summer day

Mathur

Jajoo

2014

Physiol Mol Biol Plants

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“…To avoid the loss of water under different stress conditions, plants accumulate low‐molecular weight compatible solutes such as proline (Gupta et al ). These low molecular weight osmolytes stabilize membrane integrity, scavenge ROS and protect enzymes and proteins structure (Hayat et al , Hasanuzzaman et al ).…”

Section: Resultsmentioning

confidence: 99%

Sterol glycosyltransferases required for adaptation of Withania somnifera at high temperature

Singh

Tiwari

Singh

et al. 2017

Physiologia Plantarum

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Heat is a major environmental stress factor that confines growth, productivity, and metabolism of plants. Plants respond to such unfavorable conditions through changes in their physiological, biochemical and developmental processes. Withania somnifera, an important medicinal plant, grows in hot and dry conditions, however, molecular mechanisms related to such adaptive properties are not known. Here, we elucidated that members of the sterol glycosyltransferases (SGT) gene family play important roles in the survival of W. somnifera under adverse conditions through maintaining the integrity of the membrane. SGTs are enzymes involved in sterol modifications and participate in metabolic flexibility during stress. Silencing of WsSGT members, for instance WsSGTL1, WsSGTL2 and WsSGTL4, was inimical for important physiological parameters, such as electron transport rate, photochemical quantum yield, acceptor side limitation, non-photochemical quenching (NPQ), Fv/Fm and net photosynthetic rate, whereas stomatal conductance, transpiration rate and dark respiration rates (Rds) were increased. Decreased NPQ and increased Rds helped to generate significant amount of ROS in the Wsamisgt lines. After heat stress, H O , lipid peroxidation and nitric oxide production increased in the Wsamisgt lines due to high ROS generation. The expression of HSPs in Wsamisgt lines might be involved in regulation of physiological processes during stress. We have also observed increased proline accumulation which might be involved in restricting water loss in the Wsamisgt lines. Taken together, our observations revealed that SGTL enzyme activity is required to maintain the internal damages of the cell against high temperature by maintaining the sterol vs sterol glycosides ratio in the membranes of W. somnifera.

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“…The origin of the current tetraploid Brassica species is the result of three common diploid species (B. campestris, B. nigra and B. oleracea). These tetraploid species act like main grounds for existing development and improvements for both vegetables and oilseed crops within the genus [54]. In different Brassica species a wide assortments of loci for several physiological and morphological traits have been determined and recognized also through both classical and molecular methods.…”

Section: Breeding For Crop Improvementmentioning

confidence: 99%

Effect of Abiotic Stresses on Brassica Species and Role of Transgenic Breeding for Adaptation

Ahmar

Liaqat

Hussain

et al. 2019

AJRCS

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Abiotic stresses extremely affect crop productivity and agro-morphological and biochemical properties of all Brassica species. Due to these stresses, yield of many important Brassica species decreases by disturbing their normal growth rate. In this review, we have highlighted the latest reports about the impact of different abiotic stresses on different growth stages and other morphophysiological processes of important Brassica species such as canola/rapeseed (Brassica napus), Indian mustard (Brassica juncea), Brassica oleracea and Brassica rapa. Many researchers reported Ahmar et al.; AJRCS, 3(1): 1-10, 2019; Article no.AJRCS.47584 2 that abiotic stresses influence the important morpho-biochemical characteristics such as root and shoot length, shoot fresh and dry weight, proline and relative water contents, chlorophyll amount, antioxidant enzymes activity of important Brassica species. Cell injury also occurs by disturbance in normal oxidative processes due to these stresses. Against these stresses genetic modification have been described for the development of transgenic plant. The present study will be useful to identify the best abiotic stress tolerant Brassica genotypes for further genetic engineering program and crop improvement programs. Review Article

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Effect of short-term heat stress on growth, physiology and antioxidative defence system in wheat seedlings

Cited by 135 publications

References 20 publications

Alterations in photochemical efficiency of photosystem II in wheat plant on hot summer day

Alterations in photochemical efficiency of photosystem II in wheat plant on hot summer day

Sterol glycosyltransferases required for adaptation of Withania somnifera at high temperature

Effect of Abiotic Stresses on Brassica Species and Role of Transgenic Breeding for Adaptation

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