New approach for rice improvement using a pleiotropic QTL gene for lodging resistance and yield

Ookawa, Taiichiro; Hobo, Tokunori; Yano, Masahiro; Murata, Keiko; Ando, Tsuyu; Miura, H; Asano, Katsuaki; Ochiai, Yusuke; Ikeda, Mayuko; Nishitani, Ryoichi; Ebitani, Takeshi; Ozaki, Hidenobu; Ángeles, Enrique; Hirasawa, Tadashi; Matsuoka, Makoto

doi:10.1038/ncomms1132

Cited by 260 publications

(295 citation statements)

References 35 publications

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“…They also found a positive correlation between stem diameter and stem wall thickness and a negative correlation between stem diameter and stem material strength. The rice gene ABERRANT PANICLE ORGANIZATION 1 (APO1), encoding for an F-box-protein involved in controlling rachis branch number of the panicle, has been shown to be responsible for increasing stem diameter (Ookawa et al 2010), providing a first clue of the genetic basis of stem strength in cereals. Root anchorage has been investigated more in maize than in other cereals, and several QTLs and candidate genes have been identified affecting root morphology and tolerance to root lodging (Bruce et al 2001;Landi et al 2007;Landi et al 2010).…”

Section: Introductionmentioning

confidence: 99%

Genome-wide association analysis for lodging tolerance and plant height in a diverse European hexaploid oat collection

Tumino

Voorrips

Morcia³

et al. 2017

Euphytica

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Sensitivity to lodging of oat varieties has been reduced in the last decades through the introduction of dwarfing genes. However, lodging may still cause significant yield loss, underscoring the need for new oat varieties with higher levels of lodging tolerance. In the present study, we analysed lodging and plant height in a collection of European oat accessions including landraces, old and modern varieties, in order to perform a genome-wide association study (GWAS) for identifying markers associated to lodging tolerance. This collection has been recently genotyped by the Infinium 6K SNP array for oat and SNP data were analysed as continuous intensity ratios, rather than as discrete genotypes (Tumino et al. 2016, Theor Appl Genet 129, pp. 1711-1724). Phenotypes for lodging severity, plant height and growth habit were collected under natural conditions in eight European countries. Plant height correlated to lodging severity as previously observed in many studies, explaining about 30% of lodging variation. GWAS analyses detected six significant associations for lodging and two for plant height. These results indicate that GWAS can successfully be used for identifying markers associated to lodging in oat, even though lodging is a quantitative trait influenced by several plant characteristics.

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Section: Introductionmentioning

confidence: 99%

Genome-wide association analysis for lodging tolerance and plant height in a diverse European hexaploid oat collection

Tumino

Voorrips

Morcia³

et al. 2017

Euphytica

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“…To date, at least nine genes or loci for yieldrelated traits in rice have been isolated from natural variation: Gn1a and APO1 for number of grains (7-9); GS3, GW2, and qSW5 for grain size (10-12); DEP1 and WFP for panicle architecture (13,14); SCM2 for strong culm (15); and Ghd7 for late heading and number of grains (16). APO1, SCM2, and DEP1 increased grain yield in a japonica genetic background in field experiments (9,13,15). However, no novel cloned gene has been reported to increase grain yield in indica cultivars (17).…”

mentioning

confidence: 99%

NAL1 allele from a rice landrace greatly increases yield in modern indica cultivars

Fujita

Trijatmiko

Tagle

et al. 2013

Proc. Natl. Acad. Sci. U.S.A.

268

253

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Increasing crop production is essential for securing the future food supply in developing countries in Asia and Africa as economies and populations grow. However, although the Green Revolution led to increased grain production in the 1960s, no major advances have been made in increasing yield potential in rice since then. In this study, we identified a gene, SPIKELET NUMBER (SPIKE), from a tropical japonica rice landrace that enhances the grain productivity of indica cultivars through pleiotropic effects on plant architecture. Map-based cloning revealed that SPIKE was identical to NARROW LEAF1 (NAL1), which has been reported to control vein pattern in leaf. Phenotypic analyses of a near-isogenic line of a popular indica cultivar, IR64, and overexpressor lines revealed increases in spikelet number, leaf size, root system, and the number of vascular bundles, indicating the enhancement of source size and translocation capacity as well as sink size. The near-isogenic line achieved 13-36% yield increase without any negative effect on grain appearance. Expression analysis revealed that the gene was expressed in all cell types: panicles, leaves, roots, and culms supporting the pleiotropic effects on plant architecture. Furthermore, SPIKE increased grain yield by 18% in the recently released indica cultivar IRRI146, and increased spikelet number in the genetic background of other popular indica cultivars. The use of SPIKE in rice breeding could contribute to food security in indica-growing regions such as South and Southeast Asia.qTSN4 | gene validation | pleiotropy | marker-assisted breeding

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“…Crop lodging affects the rice yield and quality, and it is not easy with mechanical harvesting. Studies show that the varieties which plants are shorter, stems are sturdier, and root systems proliferate sufficiently, will have strong lodging resistance [91][92][93] . Most Chinese varieties currently adapt to transplant, and now some varieties with relatively strong lodging resistance and relatively high yield are selected for direct seeding.…”

Section: Rice Varietiesmentioning

confidence: 99%

Review of precision rice hill-drop drilling technology and machine for paddy

Zhang

Wang

Luo

et al. 2018

International Journal of Agricultural and Biological Engineering

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Mechanized rice direct seeding is a cost-effective and efficient approach for rice cultivation. Recently, the use of rice direct seeding has been increasing rapidly owing to rural labour shortages and continuous increases in agricultural production costs. This article reviews the research and application progress of mechanized rice direct seeding including direct seeding technologies, precision rice seeding, precision rice seed-metering devices, key supporting agronomy technologies for mechanized rice direct seeding. South China Agricultural University developed precision rice hill-drop drilling (PRHDD) with synchronous furrowing and ridging technology and series machines for paddy that affords remarkable advantages in terms of saving time and labour, higher yield, and higher efficiency. In this approach, pre-germinated seeds are uniformly hill-dropped in the expected positions in puddled soil. It significantly improved the crop growth population and effectively solved the problems of high frequency of disease and pests caused by the irregular distribution of rice seeds with manual broadcasting, and generally reduces seed usage and increases the yield. Therefore, this technology has broad application prospects and great potential for promoting the development of mechanized rice direct seeding in China.

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New approach for rice improvement using a pleiotropic QTL gene for lodging resistance and yield

Cited by 260 publications

References 35 publications

Genome-wide association analysis for lodging tolerance and plant height in a diverse European hexaploid oat collection

Genome-wide association analysis for lodging tolerance and plant height in a diverse European hexaploid oat collection

NAL1 allele from a rice landrace greatly increases yield in modern indica cultivars

Review of precision rice hill-drop drilling technology and machine for paddy

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