Water-saving and drought-resistance rice: from the concept to
practice and theory

Luo, Lijun; Mei, Hanwei; Xing, Yu; Xia, Hui; Chen, Liang; Liu, Hongyan; Zhang, Anning; Xu, Kai; Wei, Haibin; Liu, Guolan; Wang, Feiming; Liu, Yi; Ma, Xiaoyan; Lou, Qiaojun; Fěng, Fang; Zhou, Liguo; Chen, Shoujun; Yan, Ming; Liu, Zaochang; Bi, Junguo; Li, Tianfei; Li, Mingshou

doi:10.1007/s11032-019-1057-5

Cited by 59 publications

(38 citation statements)

References 32 publications

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“…The twelve rice genotypes have great differences in drought tolerance, which makes them a good system to study transcriptomic bases of drought tolerance. Meanwhile, they are important breeding materials for water-saving and drought-resistance rice (WDR) [ 20 , 21 ]. Once we learn the transcriptomic features for drought tolerance in one or more genotypes, we can apply them in WDR breeding as the donors of drought tolerance.…”

Section: Methodsmentioning

confidence: 99%

“…Water deficiency and drought is one of the most limiting and disastrous factors for plant adaptation and crop production. It is thus urgent for us to breed water-saving and drought-resistant crops [ 20 , 21 ]. Among various mechanisms of drought resistance, drought tolerance (DT) ensures a plant to maintain its normal life activities under drought and protect plant cell away from damages of dehydration [ 8 ].…”

Section: Introductionmentioning

confidence: 99%

“…The rice cultivation costs huge amount of water and is very sensitive to drought [ 2 ]. Water-saving and drought-resistance rice is thus required to ensure global food safety [ 21 ]. However, drought tolerance in rice is composed by thousands of genes with minor effects [ 10 ].…”

Section: Introductionmentioning

confidence: 99%

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Temporal transcriptomic differences between tolerant and susceptible genotypes contribute to rice drought tolerance

Xia

et al. 2020

BMC Genomics

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Background Drought-tolerance ensures a crop to maintain life activities and protect cell from damages under dehydration. It refers to diverse mechanisms temporally activated when the crop adapts to drought. However, knowledge about the temporal dynamics of rice transcriptome under drought is limited. Results Here, we investigated temporal transcriptomic dynamics in 12 rice genotypes, which varied in drought tolerance (DT), under a naturally occurred drought in fields. The tolerant genotypes possess less differentially expressed genes (DEGs) while they have higher proportions of upregulated DEGs. Tolerant and susceptible genotypes have great differences in temporally activated biological processes (BPs) during the drought period and at the recovery stage based on their DEGs. The DT-featured BPs, which are activated specially (e.g. raffinose, fucose, and trehalose metabolic processes, etc.) or earlier in the tolerant genotypes (e.g. protein and histone deacetylation, protein peptidyl-prolyl isomerization, transcriptional attenuation, ferric iron transport, etc.) shall contribute to DT. Meanwhile, the tolerant genotypes and the susceptible genotypes also present great differences in photosynthesis and cross-talks among phytohormones under drought. A certain transcriptomic tradeoff between DT and productivity is observed. Tolerant genotypes have a better balance between DT and productivity under drought by activating drought-responsive genes appropriately. Twenty hub genes in the gene coexpression network, which are correlated with DT but without potential penalties in productivity, are recommended as good candidates for DT. Conclusions Findings of this study provide us informative cues about rice temporal transcriptomic dynamics under drought and strengthen our system-level understandings in rice DT.

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Section: Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Temporal transcriptomic differences between tolerant and susceptible genotypes contribute to rice drought tolerance

Xia

et al. 2020

BMC Genomics

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“…For example, Bouman et al (2006) reported that yields varying between 1205-5664 kg ha -1 were obtained against 5470-6440 m 3 ha -1 irrigation water. In recent years, Luo et al (2019) reported that in addition to yield and grain quality, intensive studies are carried out to develop new paddy varieties with high drought resistance. Paddy (Oryza sativa L.) is the most stable food product in the world and Asia, and more than two billion people get 60-70% of their food energy from rice and its derivatives.…”

Section: Introductionmentioning

confidence: 99%

Production Cost and Water Savings of Paddy Produced by Drip Irrigation

Taş¹

2021

CTNS

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Although there are different opinions on climate variability and global warming, it is a common idea in all hypotheses that water will become even more scarce. The water used in the production of paddy, which is one of the most important food sources for the majority of the population in the world, is too much due to the irrigation method. The average global water footprint of paddy production is reported as 1.391 billion m3/year. Considering this amount, it can be seen that paddy has an enormous environmental footprint. Excessive water use causes both waste of scarce resource water and numerous environmental problems during production. The most important reason for flooded production is the ability of paddy to grow/develop in water and to have a less competitive capacity with weeds. However, when rice is grown with drip irrigation, which is one of the irrigation methods that save water with high efficiency, significant increases in both yield and quality occur. Studies are showing that 50-74.6% water saving is achieved in paddy production with drip irrigation depending on the region, climate, soil, variety, producer habits, and similar situations. In addition, the cost of one kilogram of paddy produced in the drip irrigation system in the conditions of Canakkale province of Turkey has been calculated as 0.35 $. This value has been calculated as 0.44 $ in the flooded method. In addition, methane, carbon dioxide, and Nitrous oxide emissions are significantly reduced due to the transition from anaerobic to aerobic conditions. In this way, greenhouse gas emissions, other environmental negative effects, and especially groundwater pollution caused by paddy production can be reduced.

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“…Meanwhile, molecular technology has demonstrated higher e ciency in value-added breeding such as transfer and pyramiding of disease and insect resistance genes. This provides other green traits under the WDR background (Luo et al, 2019). Huhan 1S is a WDS PTGMS line of hybridization breeding using Y58S and Huhan 1B hybridization, with strong drought resistance and general blast resistance.…”

Section: Introductionmentioning

confidence: 99%

Molecular Breeding of a Novel PTGMS Line of Wdr for Broad-spectrum Resistance to Blast Using Pi9, Pikh, and Pi5 Genes

Liu

Zhang

Luo

et al. 2021

Preprint

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Background: The two-line method based on the photoperiod and thermo-sensitive genic male sterile (PTGMS) lines is more cost-effective, simple, and efficient than the three-line system based on cytoplasmic male-sterility (CMS). Blast and drought are the most prevalent biotic and abiotic stress factors that hamper rice production, respectively. Molecular techniques demonstrate higher efficacy in the pyramiding of disease resistance genes, providing green performance under the background of water-saving and drought-resistance rice.Results: This work employed molecular marker-assisted selection (MAS), conventional hybridization and high-intensity stress screening to integrate the broad-spectrum blast resistance genes Pi9, Pikh, and Pi5 into Huhan 1S. Subsequently a novel water-saving and drought-resistance rice (WDR) PTGMS line Huhan 74S was developed. The drought resistance of the new PTGMS line Huhan 74S was comparable to that of Huhan 1S. The artificial inoculation of 14 blast strains revealed that the resistance frequency of Huhan 74S was 85.7%. Based on the conditions of natural field induction, Huhan 74S and its hybrid combination revealed satisfactory resistance to leaf and neck blast. The identification outcomes of photo-thermal characteristics showed that the critical point of Huhan 74S fertility conversion had an average daily temperature of 23℃, and the stable sterile period in Shanghai lasted 51 days. The rice quality of Huhan 74S was grade 3 based on standards issued by the ministry. Also, both the agronomic and rice quality performances adhered to the conditions of two-line hybrid rice production.Conclusion: The newly bred PTGMS line Huhan 74S demonstrated a stable and lasting resistance to blast. Moreover, the hybrid combination showed a high yield potential and can be used in the breeding of high-yield, high-quality, disease-resistance two-line hybrid water-saving and drought-resistance rice (WDR), hence promoting sustainable rice production in China.

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Water-saving and drought-resistance rice: from the concept to practice and theory

Cited by 59 publications

References 32 publications

Temporal transcriptomic differences between tolerant and susceptible genotypes contribute to rice drought tolerance

Temporal transcriptomic differences between tolerant and susceptible genotypes contribute to rice drought tolerance

Production Cost and Water Savings of Paddy Produced by Drip Irrigation

Molecular Breeding of a Novel PTGMS Line of Wdr for Broad-spectrum Resistance to Blast Using Pi9, Pikh, and Pi5 Genes

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Water-saving and drought-resistance rice: from the concept to practice and theory

Cited by 59 publications

References 32 publications

Temporal transcriptomic differences between tolerant and susceptible genotypes contribute to rice drought tolerance

Temporal transcriptomic differences between tolerant and susceptible genotypes contribute to rice drought tolerance

Production Cost and Water Savings of Paddy Produced by Drip Irrigation

Molecular Breeding of a Novel PTGMS&nbsp;Line of Wdr for Broad-spectrum Resistance to Blast Using Pi9, Pikh, and Pi5 Genes

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Molecular Breeding of a Novel PTGMS Line of Wdr for Broad-spectrum Resistance to Blast Using Pi9, Pikh, and Pi5 Genes