A hairy-leaf gene, BLANKET LEAF, of wild Oryza nivara increases photosynthetic water use efficiency in rice

Hamaoka, Norimitsu; Yasui, Hirofumi; Yamagata, Yoshiyuki; Inoue, Yoshimi; Furuya, Naruto; Araki, Toshimitsu; Ueno, Osamu; Yoshimura, Atsushi

doi:10.1186/s12284-017-0158-1

Cited by 31 publications

(18 citation statements)

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“…Previously, we used the lines to assess the relationship between the density and trichomes length and gas exchange parameters (Pshenichnikova et al, 2019). In a greenhouse with natural light, the transpiration rate, stomatal conductivity, and the rate of photosynthesis of S29 and lines were inversely proportional to the density and length of tri chomes, which is consistent with the data of N. Hamaoka et al (2017) for rice. The highest water use efficiency, calculated as the relation photosynthesis rate / transpiration rate was in S29.…”

Section: Discussionsupporting

confidence: 78%

“…Among the cultivated plant species, the physiological role of leaf pubescence is poorly studied. In Oryza sativa L. in trogression of a chromosome segment from the wild species Oryza nivara increased leaf pubescence, reduced transpira tion rate and increased water use efficiency due to increased stability of the boundary air layer (Hamaoka et al, 2017). The only experiment in T. aestivum L. showed that the stomatal conductivity and the photosynthetic rate in substituted and near-isogenic lines with genetically different leaf pubescence were inversely proportional to the density and trichomes length (Pshenichnikova et al, 2019).…”

Section: Introductionmentioning

confidence: 99%

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Physiological responses to water deficiency in bread wheat (Triticum aestivum L.) lines with genetically different leaf pubescence

et al. 2020

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Studying the relationship between leaf pubescence and drought resistance is important for assessing Triticum aestivum L. genetic resources. The aim of the work was to assess resistance of common wheat genotypes with different composition and allelic state of genes that determine the leaf pubescence phenotype. We compared the drought resistance wheat variety Saratovskaya 29 (S29) with densely pubescent leaves, carrying the dominant alleles of the Hl1 and Hl3 genes, and two near isogenic lines, i: S29 hl1, hl3 and i: S29 Hl2aesp, with the introgression of the additional pubescence gene from diploid species Aegilops speltoides. Under controlled conditions of the climatic chamber, the photosynthetic pigments content, the activity of ascorbate-glutathione cycle enzymes and also the parameters of chlorophyll fluorescence used to assess the physiological state of the plants photosynthetic apparatus were studied in the leaves of S29 and the lines. Tolerance was evaluated using the comprehensive index D, calculated on the basis of the studied physiological characteristics. The recessive state of pubescence genes, as well as the introduction of the additional Hl2aesp gene, led to a 6-fold decrease in D. Under the water deficit influence, the fluorescence parameters profile changed in the lines, and the viability index decreased compared with S29. Under drought, the activity of ascorbate peroxidase, glutathione reductase and dehydroascorbate reductase in the line i: S29 hl1, hl3 decreased 1.9, 3.3 and 2.3 times, in the line i: S29 Hl2aesp it decreased 1.8, 3.6 and 1.8 times respectively, compared with S29. In a hydroponic greenhouse, line productivity was studied. Compared with S29, the thousand grains mass in the line i: S29 hl1, hl3 under water deficit was reduced. The productivity of the line i: S29 Hl2aesp was significantly reduced regardless of water supply conditions in comparison with S29. Presumably, the revealed effects are associated with violations of cross-regulatory interactions between the proteins of the trichome formation network and transcription factors that regulate plant growth and stress response.

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Section: Discussionsupporting

confidence: 78%

Section: Introductionmentioning

confidence: 99%

Physiological responses to water deficiency in bread wheat (Triticum aestivum L.) lines with genetically different leaf pubescence

et al. 2020

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“…Another credible candidate for improved WUE is leaf morphology, especially leaf hairs. A very recent study has identified and validated the use of BLANKET LEAF (a hairy leaf gene) from Oryza nivara as a candidate gene for improved photosynthetic WUE (Hamaoka et al, 2017 ) in rice. This study not only shows the utility of morphological traits for improvement of WUE but also that the crop wild relatives can be exploited as resources for the improvement of various agronomic traits like WUE.…”

Section: Translational Activities To Improve Drought Adaptation In Crmentioning

confidence: 99%

Introgression of Physiological Traits for a Comprehensive Improvement of Drought Adaptation in Crop Plants

et al. 2018

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Burgeoning population growth, industrial demand, and the predicted global climate change resulting in erratic monsoon rains are expected to severely limit fresh water availability for agriculture both in irrigated and rainfed ecosystems. In order to remain food and nutrient secure, agriculture research needs to focus on devising strategies to save water in irrigated conditions and to develop superior cultivars with improved water productivity to sustain yield under rainfed conditions. Recent opinions accruing in the scientific literature strongly favor the adoption of a “trait based” crop improvement approach for increasing water productivity. Traits associated with maintenance of positive tissue turgor and maintenance of increased carbon assimilation are regarded as most relevant to improve crop growth rates under water limiting conditions and to enhance water productivity. The advent of several water saving agronomic practices notwithstanding, a genetic enhancement strategy of introgressing distinct physiological, morphological, and cellular mechanisms on to a single elite genetic background is essential for achieving a comprehensive improvement in drought adaptation in crop plants. The significant progress made in genomics, though would provide the necessary impetus, a clear understanding of the “traits” to be introgressed is the most essential need of the hour. Water uptake by a better root architecture, water conservation by preventing unproductive transpiration are crucial for maintaining positive tissue water relations. Improved carbon assimilation associated with carboxylation capacity and mesophyll conductance is important in sustaining crop growth rates under water limited conditions. Besides these major traits, we summarize the available information in literature on classifying various drought adaptive traits. We provide evidences that Water-Use Efficiency when introgressed with moderately higher transpiration, would significantly enhance growth rates and water productivity in rice through an improved photosynthetic capacity.

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“…ILs with a high density of hairs on leaves containing a hairy leaf gene BLANKET LEAF from O. nivara in IR24 had a warmer leaf surface, and lower net photosynthesis rate (P n ), transpiration rate (T r ), and G s , but higher WUE p , suggesting that BLANKET LEAF increases WUE p when evaluated under moderate to high light intensities. Hence, it could be deployed to improve WUE P in rice ( Hamaoka et al, 2017 ). ILs containing a genomic region from O. rufigopon in KMR3 showed significant variation in P n , T r , TE (P n /T r ), and carboxylation efficiency (P n /C i ).…”

Section: Synthesismentioning

confidence: 99%

Using Biotechnology-Led Approaches to Uplift Cereal and Food Legume Yields in Dryland Environments

Dwivedi¹,

Siddique

Farooq

et al. 2018

Front. Plant Sci.

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Drought and heat in dryland agriculture challenge the enhancement of crop productivity and threaten global food security. This review is centered on harnessing genetic variation through biotechnology-led approaches to select for increased productivity and stress tolerance that will enhance crop adaptation in dryland environments. Peer-reviewed literature, mostly from the last decade and involving experiments with at least two seasons’ data, form the basis of this review. It begins by highlighting the adverse impact of the increasing intensity and duration of drought and heat stress due to global warming on crop productivity and its impact on food and nutritional security in dryland environments. This is followed by (1) an overview of the physiological and molecular basis of plant adaptation to elevated CO2 (eCO2), drought, and heat stress; (2) the critical role of high-throughput phenotyping platforms to study phenomes and genomes to increase breeding efficiency; (3) opportunities to enhance stress tolerance and productivity in food crops (cereals and grain legumes) by deploying biotechnology-led approaches [pyramiding quantitative trait loci (QTL), genomic selection, marker-assisted recurrent selection, epigenetic variation, genome editing, and transgene) and inducing flowering independent of environmental clues to match the length of growing season; (4) opportunities to increase productivity in C3 crops by harnessing novel variations (genes and network) in crops’ (C3, C4) germplasm pools associated with increased photosynthesis; and (5) the adoption, impact, risk assessment, and enabling policy environments to scale up the adoption of seed-technology to enhance food and nutritional security. This synthesis of technological innovations and insights in seed-based technology offers crop genetic enhancers further opportunities to increase crop productivity in dryland environments.

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A hairy-leaf gene, BLANKET LEAF, of wild Oryza nivara increases photosynthetic water use efficiency in rice

Cited by 31 publications

References 50 publications

Physiological responses to water deficiency in bread wheat (Triticum aestivum L.) lines with genetically different leaf pubescence

Physiological responses to water deficiency in bread wheat (Triticum aestivum L.) lines with genetically different leaf pubescence

Introgression of Physiological Traits for a Comprehensive Improvement of Drought Adaptation in Crop Plants

Using Biotechnology-Led Approaches to Uplift Cereal and Food Legume Yields in Dryland Environments

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