Improving water-use efficiency by decreasing stomatal conductance and transpiration rate to maintain higher ear photosynthetic rate in drought-resistant wheat

Li, Yuping; Li, Hongbin; Li, Yuanyuan; Zhang, Suiqi

doi:10.1016/j.cj.2017.01.001

Cited by 205 publications

(141 citation statements)

References 25 publications

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“…Therefore, our findings are in agreement with the hypothesis about the dual effect of ABA on stomata, by regulating not only their aperture, but also their development (Chater et al 2014) and suggest that the observed differences in g s and consequently in WUE and drought sensitivity could at least partially result from leaf anatomy. Similar results were observed in rice and wheat (Li et al 2017; Ouyang et al 2017). …”

Section: Discussionsupporting

confidence: 84%

Carbon isotope composition, water use efficiency, and drought sensitivity are controlled by a common genomic segment in maize

et al. 2018

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Key messageA genomic segment on maize chromosome 7 influences carbon isotope composition, water use efficiency, and leaf growth sensitivity to drought, possibly by affecting stomatal properties.AbstractClimate change is expected to decrease water availability in many agricultural production areas around the globe. Therefore, plants with improved ability to grow under water deficit are urgently needed. We combined genetic, phenomic, and physiological approaches to understand the relationship between growth, stomatal conductance, water use efficiency, and carbon isotope composition in maize (Zea mays L.). Using near-isogenic lines derived from a maize introgression library, we analysed the effects of a genomic region previously identified as affecting carbon isotope composition. We show stability of trait expression over several years of field trials and demonstrate in the phenotyping platform Phenodyn that the same genomic region also influences the sensitivity of leaf growth to evaporative demand and soil water potential. Our results suggest that the studied genomic region affecting carbon isotope discrimination also harbours quantitative trait loci playing a role in maize drought sensitivity possibly via stomatal behaviour and development. We propose that the observed phenotypes collectively originate from altered stomatal conductance, presumably via abscisic acid.Electronic supplementary materialThe online version of this article (10.1007/s00122-018-3193-4) contains supplementary material, which is available to authorized users.

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Section: Discussionsupporting

confidence: 84%

Carbon isotope composition, water use efficiency, and drought sensitivity are controlled by a common genomic segment in maize

et al. 2018

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“…Genotypic variation of ear water-stress tolerance has also been demonstrated by Li et al (2017), where a stresstolerant wheat variety displayed a conservative water-use strategy during post-anthesis by reducing leaf transpiration while maintaining high levels of ear gas exchange. Vicente et al (2018) postulated that water stress in wheat reduced the expression of photosynthetic genes (e.g.…”

Section: Photosynthetically Active Ear Componentsmentioning

confidence: 92%

Photosynthesis in non‐foliar tissues: implications for yield

et al. 2020

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Summary Photosynthesis is currently a focus for crop improvement. The majority of this work has taken place and been assessed in leaves, and limited consideration has been given to the contribution that other green tissues make to whole‐plant carbon assimilation. The major focus of this review is to evaluate the impact of non‐foliar photosynthesis on carbon‐use efficiency and total assimilation. Here we appraise and summarize past and current literature on the substantial contribution of different photosynthetically active organs and tissues to productivity in a variety of different plant types, with an emphasis on fruit and cereal crops. Previous studies provide evidence that non‐leaf photosynthesis could be an unexploited potential target for crop improvement. We also briefly examine the role of stomata in non‐foliar tissues, gas exchange, maintenance of optimal temperatures and thus photosynthesis. In the final section, we discuss possible opportunities to manipulate these processes and provide evidence that Triticum aestivum (wheat) plants genetically manipulated to increase leaf photosynthesis also displayed higher rates of ear assimilation, which translated to increased grain yield. By understanding these processes, we can start to provide insights into manipulating non‐foliar photosynthesis and stomatal behaviour to identify novel targets for exploitation in continuing breeding programmes.

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“…In addition, evidence exists that plants adjust their stomatal density under water-stress conditions (Galm es et al, 2007b;Hamanishi et al, 2012). Reductions in stomatal density in water-stressed plants have been reported in Triticum aestivum (wheat; Li et al, 2017) and Spondias tuberosa (the umbu tree; Silva et al, 2009). In contrast, for other species, stomatal density increases under drought conditions, as in Phaseolus vulgaris (the common bean; Gan et al, 2010) and Leymus chinensis (Xu and Zhou, 2008).…”

Section: Introductionmentioning

confidence: 99%

The ratio of trichomes to stomata is associated with water use efficiency in Solanum lycopersicum (tomato)

et al. 2018

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Trichomes are specialised structures that originate from the aerial epidermis of plants, and play key roles in the interaction between the plant and the environment. In this study we investigated the trichome phenotypes of four lines selected from the Solanum lycopersicum × Solanum pennellii introgression line (IL) population for differences in trichome density, and their impact on plant performance under water-deficit conditions. We performed comparative analyses at morphological and photosynthetic levels of plants grown under well-watered (WW) and also under water-deficit (WD) conditions in the field. Under WD conditions, we observed higher trichome density in ILs 11-3 and 4-1, and lower stomatal size in IL 4-1 compared with plants grown under WW conditions. The intrinsic water use efficiency (WUE ) was higher under WD conditions in IL 11-3, and the plant-level water use efficiency (WUE ) was also higher in IL 11-3 and in M82 for WD plants. The ratio of trichomes to stomata (T/S) was positively correlated with WUE and WUE , indicating an important role for both trichomes and stomata in drought tolerance in tomato, and offering a promising way to select for improved water use efficiency of major crops.

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Improving water-use efficiency by decreasing stomatal conductance and transpiration rate to maintain higher ear photosynthetic rate in drought-resistant wheat

Cited by 205 publications

References 25 publications

Carbon isotope composition, water use efficiency, and drought sensitivity are controlled by a common genomic segment in maize

Carbon isotope composition, water use efficiency, and drought sensitivity are controlled by a common genomic segment in maize

Photosynthesis in non‐foliar tissues: implications for yield

The ratio of trichomes to stomata is associated with water use efficiency in Solanum lycopersicum (tomato)

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