Water use efficiency in the drought-stressed sorghum and maize in relation to expression of aquaporin genes

Hasan, Solwan A; Rabei, Sami H.; Nada, Reham M.; Abogadallah, Gaber M.

doi:10.1007/s10535-016-0656-9

Cited by 48 publications

(41 citation statements)

References 45 publications

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“…An interesting fact is that the MCA derivative, in general, significantly potentiated water use efficiency (WUE) throughout stress, showing that this derivative induces a greater water saving by fixed carbon. This parameter is a great indicator of water stress tolerance in C4 plants such as maize (Araus et al 2010;Lopes et al 2011;Souza et al 2013b;Hasan et al 2017). In bean plants, chitosan with 85% deacetylation did not increase WUE (Iriti et al 2009).…”

Section: Discussionmentioning

confidence: 98%

Action of N-Succinyl and N,O-Dicarboxymethyl Chitosan Derivatives on Chlorophyll Photosynthesis and Fluorescence in Drought-Sensitive Maize

Reis

Magalhães²,

Almeida

et al. 2018

J Plant Growth Regul

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Chitosan induces plant tolerance to various abiotic stresses, including water deficit. However, its use may be limited, due to its constitution and low solubility in water. Thus, chemical modifications were proposed in this study with the objective of potentializing its biological effects in maize plants. The derivatives were semi-synthesized (N-succinyl and N,O-dicarboxymethyl) and, together with chitosan, they were applied, via the leaf, in a drought-sensitive maize hybrid (BRS1030) under pre-flowering water deficit. The water deficit was maintained for 15 days and the analyses were performed at the beginning and end of stress, and also in rehydration. Leaf water potential, gas exchange, chlorophyll fluorescence, and content of chloroplastidic pigments were evaluated. The use of the derivatives modulated photosynthesis parameters, affecting the involved mechanisms, such as stomatal activity, water use efficiency and photosystem II activity. Chlorophyll fluorescence indicated that the antenna complex was damaged by the water deficit condition, with a decrease in the energy flux in the electron transport chain and in the photochemical phase of photosynthesis. However, the spraying of chitosan derivatives induced tolerance to water deficit, suggesting that chitosan derivatives are more bioavailable to plants. Water stress decreases pigment content, but both the application of chitosan and derivatives increased these contents. It is concluded that chitosan derivatives improved the photosynthetic parameters in maize susceptible to drought, inducing tolerance to this stress, and the possible reasons and consequences are discussed.

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Section: Discussionmentioning

confidence: 98%

Action of N-Succinyl and N,O-Dicarboxymethyl Chitosan Derivatives on Chlorophyll Photosynthesis and Fluorescence in Drought-Sensitive Maize

Reis

Magalhães²,

Almeida

et al. 2018

J Plant Growth Regul

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“…These results were more pronounced in maize plants, which had a significant prolongation in VS and RS (Table , Figures , and ). Sorghum plants are known for showing greater tolerance to extreme conditions compared with other cereals, with temperature requirement for optimal growth and development ranging between 27 and 30°C (Hasan, Rabei, Nada, & Abogadallah, ). For maize plants, this requirement is from 24 to 30°C with a strong correlation between the number of accumulated leaves and the temperature (Clerget, Dingkuhn, Gozé, Rattunde, & Ney, ).…”

Section: Discussionmentioning

confidence: 99%

“…Increases in water‐use efficiency were observed in sorghum biomass (Enciso, Jifon, Ribera, Zapata, & Ganjegunte, ), saccharine sorghum (Curt, Fernandez, & Martinez, ) and grain sorghum (Jabereldar, Naim, Abdalla, & Dagash, ) in conditions of low water availability. Moreover, Hasan et al (), evaluating the responses of sorghum and maize plants to water deficit, observed a lower tolerance to drought in maize plants, which presented a lower water‐use efficiency, as well as greater growth reductions, relative leaf water content and gas exchange.…”

Section: Discussionmentioning

confidence: 99%

Phenological and physiological evaluation of first and second cropping periods of sorghum and maize crops

Barbosa

Kuki

Bengala

et al. 2019

J Agronomy Crop Science

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Environmental conditions influence phenology and physiological processes of plants. It is common for maize and sorghum to be sown at two different periods: the first cropping (spring/summer) and the second cropping (autumn/winter). The phenological cycle of these crops varies greatly according to the planting season, and it is necessary to characterize the growth and development to facilitate the selection of the species best adapted to the environment. The aim of this study was to characterize phenological phases and physiological parameters in sorghum and maize plants as a function of environmental conditions from the first cropping and second cropping periods. Two parallel experiments were conducted with both crops. The phenological characterization was based on growth analyses (plant height, leaf area and photoassimilate partitioning) and gas exchange evaluations (net assimilation rate, stomatal conductance, transpiration and water‐use efficiency). It was found that the vegetative stage (VS) for sorghum and maize plants was 7 and 21 days, respectively, longer when cultivated during the second cropping. In the first cropping, the plants were taller than in the second cropping, regardless of the crop. The stomatal conductance of sorghum plants fluctuated in the second cropping during the development period, while maize plants showed decreasing linear behaviour. Water‐use efficiency in sorghum plants was higher during the second cropping compared with the first cropping. In maize plants, in the second cropping, the water‐use efficiency showed a slight variation in relation to the first cropping. It was concluded that the environmental conditions as degree‐days, temperature, photoperiod and pluvial precipitation influence the phenology and physiology of both crops during the first and the second cropping periods, specifically cycle duration, plant height, leaf area, net assimilation rate, stomatal conductance and water‐use efficiency, indicating that both crops respond differentially to environmental changes during the growing season.

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“…Vossia grows in standing water, Rhytachne and Oxyrhachis in swamps, although Urelytrum occurs in open woodlands. This history could explain why maize is less drought tolerant than the related species sorghum (e.g., (30,31)), but could also identify genomic regions that confer tolerance to waterlogged soils.…”

Section: Discussionmentioning

confidence: 99%

Ancestry of the two subgenomes of maize

Pasquet

et al. 2018

Preprint

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Maize (Zea mays ssp. mays) is not only one of the world's most important crops, but it also is a powerful tool for studies of genetics, genomics, and cytology. The genome of maize shows the unmistakable signature of an ancient hybridization event followed by whole genome duplication (allopolyploidy), but the parents of this event have been a mystery for over a century, since studies of maize cytogenetics began. Here we show that the whole genome duplication event preceded the divergence of the entire genus Zea and its sister genus Tripsacum. One genome was donated, in whole or in part, by a plant related to the modern African genera Urelytrum and Vossia, although genomic rearrangement has been extensive. The other genome donor is less well-supported, but may have been related to the modern Rottboellia-Hemarthria clade, which is also African. Thus Zea and Tripsacum together represent a New World radiation derived from African ancestors.

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Water use efficiency in the drought-stressed sorghum and maize in relation to expression of aquaporin genes

Cited by 48 publications

References 45 publications

Action of N-Succinyl and N,O-Dicarboxymethyl Chitosan Derivatives on Chlorophyll Photosynthesis and Fluorescence in Drought-Sensitive Maize

Action of N-Succinyl and N,O-Dicarboxymethyl Chitosan Derivatives on Chlorophyll Photosynthesis and Fluorescence in Drought-Sensitive Maize

Phenological and physiological evaluation of first and second cropping periods of sorghum and maize crops

Ancestry of the two subgenomes of maize

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