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Monakhova, O. F.; Chernyad’ev, I. I.

doi:10.1023/a:1016243424428

Cited by 72 publications

(11 citation statements)

References 3 publications

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“…Stomatal closure under drought reduces the CO 2 availability which makes plant more susceptible to photo damage (Lawlor and Cornic, 2002). The reduced moisture availability induces negative changes in photosynthetic pigments, damages the photosynthetic machinery (Fu and Huang, 2001) and impairs the performance of important enzymes (Monakhova and Chernyadev, 2002) causing considerable loses in plant growth and yield. Similarly, the heat stress also impairs the process of photosynthesis by disturbing the photosynthetic pigments (Camejo et al, 2006), reducing activity of photosystem II (Camejo et al, 2005) and impairing the regeneration capacity of RuBP (Wise et al, 2004).…”

Section: Physiological Responsesmentioning

confidence: 99%

Crop Production under Drought and Heat Stress: Plant Responses and Management Options

et al. 2017

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Abiotic stresses are one of the major constraints to crop production and food security worldwide. The situation has aggravated due to the drastic and rapid changes in global climate. Heat and drought are undoubtedly the two most important stresses having huge impact on growth and productivity of the crops. It is very important to understand the physiological, biochemical, and ecological interventions related to these stresses for better management. A wide range of plant responses to these stresses could be generalized into morphological, physiological, and biochemical responses. Interestingly, this review provides a detailed account of plant responses to heat and drought stresses with special focus on highlighting the commonalities and differences. Crop growth and yields are negatively affected by sub-optimal water supply and abnormal temperatures due to physical damages, physiological disruptions, and biochemical changes. Both these stresses have multi-lateral impacts and therefore, complex in mechanistic action. A better understanding of plant responses to these stresses has pragmatic implication for remedies and management. A comprehensive account of conventional as well as modern approaches to deal with heat and drought stresses have also been presented here. A side-by-side critical discussion on salient responses and management strategies for these two important abiotic stresses provides a unique insight into the phenomena. A holistic approach taking into account the different management options to deal with heat and drought stress simultaneously could be a win-win approach in future.

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Section: Physiological Responsesmentioning

confidence: 99%

Crop Production under Drought and Heat Stress: Plant Responses and Management Options

et al. 2017

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“…Cytokinin preparations are highly efficient and ecologically safe (they undergo rapid decomposition into natural compounds used in plant metabolism); administration of these preparations increases the productivity of agricultural plants, particularly under unfavorable environmental conditions [12,14,55,95,96,[106][107][108]. Our data demonstrate that, under the conditions of water deficiency, kartolin-4 increases wheat productivity by attenuating the suppression of photosynthesis and preventing excessive loss of leaf tissue water [14,78,109,110].…”

Section: ***mentioning

confidence: 96%

Effect of water stress on the photosynthetic apparatus of plants and the protective role of cytokinins: A review

Chernyad’ev

2005

Appl Biochem Microbiol

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In recent years, the definition of the term stress (meaning "strain" in English) has been extended, so that it is now used in reference to higher and lower plants and even microorganisms, as opposed to the original usage implying humans and animals [1][2][3]. The Canadian physiologist Hans Selye, who coined the term in the 1930s [4], believed that the ability of an organism to adaptation is related to concentration and exertion, in the sense of strenuous efforts undertaken to mobilize this organism's defense systems. Similarity of stress reactions in bacteria (the most ancient inhabitants of Earth) [3] to those occurring in contemporary representatives of eukaryotes [1, 2, 4] is currently a welldocumented fact.The most frequent stress effect experienced by plants and their photosynthetic apparatus is water deficiency. The greenhouse effect (which becomes more and more pronounced), increased evaporation and reduction of water basins, elevation of mean annual temperature, and augmented contamination of the atmosphere by anthropogenic microadulterants (first of all, methane and oxides of carbon and nitrogen) [5, 6] may disrupt gas exchange, dark and light reactions of photosynthesis [7][8][9], and the unified hydrodynamic system of water supply, transport, and transpiration, which ensures normal water homeostasis in plants [10].Photosynthesis is particularly sensitive to effects of water deficiency and increased temperature. Even a small decrease in the water potential of a plant causes its stomata to close, which entails ëé 2 deficiency in photosynthesizing tissues and decreases the intensity of photosynthetic assimilation of CO 2 (which is the integral parameter of the process). As the degree of hydration of the tissues decreases, the photosynthetic apparatus of plants undergoes functional changes, which further develop into disruption of its structure [7-9, 11].Studies of the resistance of agricultural plants to water deficiency are of great importance for the understanding of the mechanism of disrupting effects of stress. Such studies are also necessary for developing scientifically well-grounded methods for restoring the operation of the photosynthetic apparatus and increasing its stability (which in turn increase the harvest. However, alterations of the photosynthetic apparatus (and structural and functional characteristics of chloroplasts in particular), taking place under the conditions of water deficiency, are not as well studied as those occurring under the effect of other stress types (e.g., decreased or increased temperatures, deficiency or excess of nitrogen or other nutritive minerals, and amount and quality of light).Plant resistance to water deficiency is related to metabolic changes and functional and structural rearrangements of photosynthesizing tissues. These changes are coordinated by regulatory systems, of which the most important for processes of plant adaptation are those involving cytokinins and other phytohormones. Cytokinins, which regulate multiple functions in plant cells, were shown to ...

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“…It inhibits the photosynthesis of plants, causes changes in chlorophyll contents and components and damage to the photosynthetic apparatus (Nayyar and Gupta 2006 ) . In addition, it inhibits the photochemical activities and decreases the activities of enzymes in the Calvin Cycle in photosynthesis (Monakhova and Chernyadev 2002 ) .…”

Section: Use Of Compost To Combat Abiotic Stressmentioning

confidence: 99%