Drought stress and morphophysiological responses in plants

Shahzad, Muhammad; Jan, Sami Ullah; Afzal, Fakiha; Khalid, Maria; Gul, Alvina; Sharma, Iti; Sofo, Adriano; Ahmad, Parvaiz

doi:10.1002/9781119054450.ch27

Cited by 17 publications

(16 citation statements)

References 116 publications

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“…The economic losses in crop production due to drought are quite substantial and will undoubtedly further increase with the expected climate changes. To prepare for these changes, various new agricultural technologies are tried and utilised [ 1 , 2 ]. Some attention has been paid to the application of diverse chemical compounds such as polyethylene glycol (PEG), amino acids, antioxidants, phytohormones, minerals, volatile organic compounds, etc .…”

Section: Introductionmentioning

confidence: 99%

Drought-tolerant and drought-sensitive genotypes of maize (Zea mays L.) differ in contents of endogenous brassinosteroids and their drought-induced changes

et al. 2018

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The contents of endogenous brassinosteroids (BRs) together with various aspects of plant morphology, water management, photosynthesis and protection against cell damage were assessed in two maize genotypes that differed in their drought sensitivity. The presence of 28-norbrassinolide in rather high quantities (1–2 pg mg-1 fresh mass) in the leaves of monocot plants is reported for the first time. The intraspecific variability in the presence/content of the individual BRs in drought-stressed plants is also described for the first time. The drought-resistant genotype was characterised by a significantly higher content of total endogenous BRs (particularly typhasterol and 28-norbrassinolide) compared with the drought-sensitive genotype. On the other hand, the drought-sensitive genotype showed higher levels of 28-norcastasterone. Both genotypes also differed in the drought-induced reduction/elevation of the levels of 28-norbrassinolide, 28-norcastasterone, 28-homocastasterone and 28-homodolichosterone. The differences observed between both genotypes in the endogenous BR content are probably correlated with their different degrees of drought sensitivity, which was demonstrated at various levels of plant morphology, physiology and biochemistry.

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Section: Introductionmentioning

confidence: 99%

Drought-tolerant and drought-sensitive genotypes of maize (Zea mays L.) differ in contents of endogenous brassinosteroids and their drought-induced changes

et al. 2018

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“…Past investigations revealed that irrigation regimes significantly influenced seed cotton yield and its attributes (Bolek, 2007;Shahzad et al, 2016;Zhang et al, 2017). Further researchers reported that drought stress conditions decreased the total productivity of cotton due to a reduction in bolls per plant and the boll weight (Saleem et al, 2015;Wang et al, 2016;Tohir et al, 2018;Shavkiev et al, 2020;Shavkiev et al, 2021).…”

Section: Influence Of Irrigation Regime On Yield Traitsmentioning

confidence: 99%

Pima Cotton (Gossypium Barbadense L.) Lines Assessment for Drought Tolerance in Uzbekistan

SHAVKIEV¹,

NABIEV²,

AZIMOV³

et al. 2022

SABRAOJBG

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Globally, increasing water and energy demand is expected to reach 6.9 trillion cubic meters by 2030, exceeding 40% of the available water supplies. Climate change and rising temperatures caused water shortages due to lesser and irregular rainfalls, leading to lower production of crops. The research to assess drought tolerance of Pima cotton (Gossypium barbadense. L) lines in Uzbekistan revealed the line, T-450 as the most promising for drought environments. The research, in a randomized complete block design (RCBD) in three replications with a factorial arrangement and two irrigation regimes (non-stress and water stress at the seedling stage), was conducted at the experimental field of the Institute of Genetics and Plant Experimental Biology, District Zangi-Ota, Tashkent Region, Uzbekistan. Nine Pima cotton lines, i.e., Сурхон-14 (control cultivar), Т-1, Т-5440, Т-2006, Т-10, Т-167, Т-5445, Т-450, and Т-663 with diverse agronomic characters, were selected for their potential yield during 2019, 2020, and 2021 cropping seasons under two different environments (optimal and water deficit condition). Drought indices revealed significant differences among lines, except the golden mean (GM). Results in the ranking method indicate that among the drought tolerance indices, mean productivity (MP), geometric mean productivity (GMP), stress tolerance index (STI), mean relative performance (MRP), relative efficiency index (REI), and relative drought index (RDY), show the most suitable indicators because of their high correlation with seed cotton yield. Cluster analysis and three-dimensional plots showed the cotton inbred lines with the highest tolerance to drought under both irrigation conditions. The first three principal components (PCs) explained 67.54% of total variation and the PC1 can be nominated as a potentially stable yield. The biplot diagram based on PCs and drought tolerance indices showed that MP, GMP, STI, MRP, REI, and YI were the best indices for screening the tolerant cotton inbred lines, such as, T-450.

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“…Water stress harshly influences plant growth and development with considerable reductions in plant growth and biomass accumulates. The major adverse consequences of water stress on plant's growth are reduced rate of cell expansion, cell division, leaf size area, the proliferation of roots, elongation of the stem, fluctuation in stomatal oscillations, water relations and plant's nutrients uptake which ultimately reduced crop productivity and relative water use efficiency of plants (Farooq et al, 2009;Shahzad et al, 2016). Climatic fluctuation and its representations predicted that drought frequency and its severity have been increased under the continuous global environmental change conditions (Shahzad et al, 2021).…”

Section: Water Stressmentioning

confidence: 99%

“…For seed development transportation of assimilates is necessary towards the reproductive sink. Seed setting and its filling is mostly restricted due to limited assimilation either in source or sink (Shahzad et al, 2016). Water stress limits the size of tissues of the source as well as sinks.…”

Section: Effects Of Water Stress On Plant's Mechanismsmentioning

confidence: 99%

Effects of Water Stress on Cotton (Gossypium spp.) Plants and Productivity

Rehman

Bakhsh

Zubair³

et al. 2021

Egypt. J. Agron.

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Egyptian Journal of Agronomy http://agro.journals.ekb.eg/ Review 20T HE WATER stress harshly influences the plant growth and development with considerable reductions in plant growth and biomass accumulates. It declines the number of bolls per plant, bolls weight, and seed cotton (Gossypium spp.) yield. Fiber length, fiber strength, seed index and boll weight are reduced dynamically. The relative leaf water contents, transpiration rate and leaf water potential are decreased while leaf and canopy temperature is increased under water stress conditions. Limited water availability restricts the total uptake of nutrients, thus deprecating their concentration in the plant tissues. The major effects of water stress on the plants are lowered photosynthesis stimulated by reduced leaf expansion, early leaf senescence, deteriorated photosynthetic machinery and reduction in food production.The Plant accomplishes escape from moisture stress by shortening its growing season which results in a reduction in yield. The plants cut down their water spending under water stress conditions by dercreasing the number and area of leaves to minimize the yield losses. The growth and development of tolerant genotypes are relatively fast because of retention of more moisture from soil earlier. Genes are induced by water stress, categorized into regulatory and functional genes; from them, functional genes produce functional proteins, whereas regulatory genes product regulatory proteins like transcriptional factors, they control a cluster of genes by regulating the expression of different targeted genes in their promoter region through specific binding of it with cis-acting elements. The development of stress-tolerant cotton varieties based on the stability of yield and yield components under water stress conditions should be the prime focus of breeders.

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Drought stress and morphophysiological responses in plants

Cited by 17 publications

References 116 publications

Drought-tolerant and drought-sensitive genotypes of maize (Zea mays L.) differ in contents of endogenous brassinosteroids and their drought-induced changes

Drought-tolerant and drought-sensitive genotypes of maize (Zea mays L.) differ in contents of endogenous brassinosteroids and their drought-induced changes

Pima Cotton (Gossypium Barbadense L.) Lines Assessment for Drought Tolerance in Uzbekistan

Effects of Water Stress on Cotton (Gossypium spp.) Plants and Productivity

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