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Maestri, Elena; Klueva, Natalya; Perrotta, Carla; Gullì, Mariolina; Nguyen, Henry T.; Marmiroli, Nelson

doi:10.1023/a:1014826730024

Cited by 305 publications

(84 citation statements)

References 63 publications

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“…Hormones play an important role in this regard. Hormonal homeostasis, stability, content, biosynthesis and compartmentalization are altered under heat stress (Maestri et al, 2002;Wahid et al, 2007). ABA, as a stress hormone, is involved in the regulation of many physiological properties by acting as a signal molecule.…”

Section: Resultsmentioning

confidence: 99%

“…Different environmental stresses, including high temperature, result in increased levels of ABA. Induction of ABA is an important component of thermotolerance, suggesting its involvement in biochemical pathways essential for survival under heat-induced desiccation stress (Maestri et al, 2002). Other studies also suggest that induction of several HSPs, e.g.…”

Section: Resultsmentioning

confidence: 99%

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Brassinosteroid enhanced the level of abscisic acid in Chlorella vulgaris subjected to short-term heat stress

Bajguz

2009

Journal of Plant Physiology

107

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Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

Brassinosteroid enhanced the level of abscisic acid in Chlorella vulgaris subjected to short-term heat stress

Bajguz

2009

Journal of Plant Physiology

107

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“…These aspects of thermotolerance and set of genes implicated to impart heat tolerance have been reviewed (Inaba et al 2003;Maestri et al 2002;Los and Murata 2004). Besides the genetic stock diversity and analysis of QTL, the following factors can be important in providing heat tolerance in plant cells: (1) HSPs; (2) antioxidants; (3) membrane lipid unsaturation; (4) gene expression and translation; (5) protein heat stability; (6) accumulation of solutes.…”

Section: Genetic Basis Of Heat Tolerancementioning

confidence: 99%

Heat stress: an overview of molecular responses in photosynthesis

et al. 2008

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The primary targets of thermal damage in plants are the oxygen evolving complex along with the associated cofactors in photosystem II (PSII), carbon fixation by Rubisco and the ATP generating system. Recent investigations on the combined action of moderate light intensity and heat stress suggest that moderately high temperatures do not cause serious PSII damage but inhibit the repair of PSII. The latter largely involves de novo synthesis of proteins, particularly the D1 protein of the photosynthetic machinery that is damaged due to generation of reactive oxygen species (ROS), resulting in the reduction of carbon fixation and oxygen evolution, as well as disruption of the linear electron flow. The attack of ROS during moderate heat stress principally affects the repair system of PSII, but not directly the PSII reaction center (RC). Heat stress additionally induces cleavage and aggregation of RC proteins; the mechanisms of such processes are as yet unclear. On the other hand, membrane linked sensors seem to trigger the accumulation of compatible solutes like glycinebetaine in the neighborhood of PSII membranes. They also induce the expression of stress proteins that alleviate the ROS-mediated inhibition of repair of the stress damaged photosynthetic machinery and are required for the acclimation process. In this review we summarize the recent progress in the studies of molecular mechanisms involved during moderate heat stress on the photosynthetic machinery, especially in PSII.

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“…Plants could alter their metabolisms by various means responding to heat stress, particularly by producing compatible solutes that are able to maintain cell turgor by osmotic adjustment, organize proteins and cellular structures, and modify the antioxidant system to re-establish the cellular redox homeostasis [4][5][6]. Additionally, disturbance of fundamental processes such as carbon and nitrogen assimilation, respiration, and transpiration may reduce overall metabolic efficiency and result in vegetative developmental defects [7,8].…”

Section: Introductionmentioning

confidence: 99%

Influence of heat stress on leaf morphology and nitrogen–carbohydrate metabolisms in two wucai (Brassica campestris L.) genotypes

et al. 2017

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Heat stress is a major environmental stress that limits plant growth and yield worldwide. The present study was carried out to explore the physiological mechanism of heat tolerant to provide the theoretical basis for heat-tolerant breeding. The changes of leaf morphology, anatomy, nitrogen assimilation, and carbohydrate metabolism in two wucai genotypes (WS-1, heat tolerant; WS-6, heat sensitive) grown under heat stress (40°C/30°C) for 7 days were investigated. Our results showed that heat stress hampered the plant growth and biomass accumulation in certain extent in WS-1 and WS-6. However, the inhibition extent of WS-1 was significantly smaller than WS-6. Thickness of leaf lamina, upper epidermis, and palisade mesophyll were increased by heat in WS-1, which might be contributed to the higher assimilation of photosynthates. During nitrogen assimilation, WS-1 possessed the higher nitrogenrelated metabolic enzyme activities, including nitrate reductase (NR), glutamine synthetase (GS), glutamate synthase (GOGAT), and glutamate dehydrogenase (GDH), which were reflected by higher photosynthetic nitrogen-use efficiency (PNUE) with respect to WS-6. The total amino acids level had no influence in WS-1, whereas it was reduced in WS-6 by heat. And the proline contents of both wucai genotypes were all increased to respond the heat stress. Additionally, among all treatments, the total soluble sugar content of WS-1 by heat got the highest level, including higher contents of sucrose, fructose, and starch than those of WS-6. Moreover, the metabolism efficiency of sucrose to starch in WS-1 was greater than WS-6 under heat stress, proved by higher activities of sucrose phosphate synthase (SPS), sucrose synthase (SuSy), acid invertase (AI), and amylase. These results demonstrated that leaf anatomical alterations resulted in higher nitrogen and carbon assimilation in heat-tolerant genotype WS-1, which exhibited a greater performance to resist heat stress.

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Cited by 305 publications

References 63 publications

Brassinosteroid enhanced the level of abscisic acid in Chlorella vulgaris subjected to short-term heat stress

Brassinosteroid enhanced the level of abscisic acid in Chlorella vulgaris subjected to short-term heat stress

Heat stress: an overview of molecular responses in photosynthesis

Influence of heat stress on leaf morphology and nitrogen–carbohydrate metabolisms in two wucai (Brassica campestris L.) genotypes

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