Photoperiod Sensitivity Gene of Se-1 Locus Found in Photoperiod Insensitive Rice Cultivars of the Northern Limit Region of Rice Cultivation

Ichitani, Katsuyuki; Okumoto, Yutaka; Tanisaka, Takatoshi

doi:10.1270/jsbbs1951.47.145

Cited by 27 publications

(39 citation statements)

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“…Based on a series of genetic analyses of heading time of the Japanese cultivars, we disclosed a key allelic constitution of the four major heading time loci, Se1, Ef1, E1 and Se9, in each cultivation area in Japan (Okumoto et al 1991, 1992a, 1992b, 1996, Ichitani et al 1997. Among the loci, Se1 was found to be a key locus for the differentiation of the J-2 cultivars from the J-3 cultivars.…”

Section: Discussionmentioning

confidence: 99%

“…As indicated by many researchers, heading time is closely associated with the regional adaptability of rice cultivars (Okumoto et al 1991, 1992a, 1992b, 1996, Tanisaka et al 1992, Ichitani et al 1997. The wide commercial use of the TG cultivars certainly depended on the heading time that was well adapted to the climatic conditions prevailing in South Korea.…”

Section: Introductionmentioning

confidence: 99%

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Heading Time Genes Responsible for the Regional Adaptability of ‘Tongil-type Short-culmed Rice Cultivars’ Developed in Korea

et al. 2007

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In the Republic of Korea (South Korea), many high-yielding rice cultivars, called 'Tongil-type short-culmed (TG) cultivars', were developed by indica-japonica hybridizations in the 1970s-1990s. The TG cultivars all show a long basic vegetative growth (BVG) period and low photoperiod sensitivity (PS). Such a combination of BVG period and PS, similar to those of modern indica cultivars for the low latitudes, was absent either among Korean or among Japanese japonica cultivars. Subsequent genetic analysis revealed that the long BVG period of the TG cultivars was due to the allelic constitution between the early heading time gene lh(t) and a non-functional allele at the Se1 locus. The low PS of the TG cultivars was conferred by this allele. Sequence analysis showed that the non-functional allele harbored a 4-bp deletion in exon 2, compared with the functional allele Se1-n of the rice cultivar 'Nipponbare', and differed in sequence from the known nonfunctional allele Se1-e. We designated this novel allele as Se1-k. Also lh(t) was found to be a novel gene located on chromosome 8. We designated this gene as lh4 at the Lh4 locus (Late heading-4). Since both Se1-k and lh4 were not detected in japonica cultivars, it was considered that these two alleles were derived from an indica cultivar(s) used as cross parent(s).

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Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Heading Time Genes Responsible for the Regional Adaptability of ‘Tongil-type Short-culmed Rice Cultivars’ Developed in Korea

et al. 2007

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“…Extremely low photoperiod sensitivity might be essential for adapting to Hokkaido (Tanisaka et al 1992, Okumoto et al 1996, Ichitani et al 1997. However, despite the substantial characterization of the extremely low photoperiod sensitivity of the varieties in Hokkaido, little is known about the genetic basis of the variation for heading date among those varieties.…”

Section: Introductionmentioning

confidence: 99%

Identification of QTLs Conferring Genetic Variation for Heading Date among Rice Varieties at the Northern-limit of Rice Cultivation

Fujino

Sekiguchi

2005

Breed. Sci.

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Appropriate variation of heading date within the optimum range in a particular region is an important objective in rice breeding programs. Quantitative trait loci (QTLs) conferring genetic variation for heading date were identified among the rice varieties in the northern-limits of rice cultivation, Hokkaido (Japan), Portugal, Hungary and Italy. Based on segregation analyses of heading date, these varieties were categorized into two groups: one included the Hokkaido varieties and the other included the European varieties. Two QTLs controlling heading date were detected on chromosomes 6 and 7 using backcross inbred lines (BILs) derived from a cross between Hayamasari (Hokkaido) and Italica Livorno (Italy). The most effective QTL, qDTH-7 on chromosome 7, accounted for 64.5% of total phenotypic variation. Also, clear relationships between days to heading and the marker genotypes that were located in the region of qDTH-7 were observed in the two BIL populations from the crosses of Hoshinoyume (Hokkaido) with Arroz Da Terra (Portugal) or Dunghung Shali (Hungary). Estimation of the photoperiod sensitivity for these varieties indicated that qDTH-7 is involved in photoperiod sensitivity. These results indicate that qDTH-7 was responsible for distinguishing the varieties in the northern-limits of rice cultivation into the two groups.

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“…Photoperiod sensitivity (PS) and basic vegetative growth are the major determinants of heading date in rice. Several major genes controlling these traits have been identified in rice, including Ef-1 (early flowering; and Se-1 have proven to be the most common alleles controlling heading time (Yamagata et al 1986, Ichitani et al 1997. The stimulative effect of E 1 on PS is strong compared with that exerted by either E 2 or E 3 , and the effect of E 1 is considerably enhanced by the presence of E 3 , and even more so by the presence of both E 2 and E 3 , leading to significant delay in heading time (Yamagata et al 1986;Cai et al 1987;Ichitani et al 1997Ichitani et al , 1998Luo et al 2001).…”

mentioning

confidence: 99%

“…Photoperiod sensitivity (PS) and basic vegetative growth are the major determinants of heading date in rice. Several major genes controlling these traits have been identified in rice, including Ef-1 (early flowering; Yamagata et al 1986;Okumoto et al 1992;Tanisaka et al 1992;Ichitani et al 1997Ichitani et al , 1998Inoue et al 1998), E 1 -E 3 and Se-1 Ichitani et al 1997Ichitani et al , 1998. In particular E 1 and Se-1 have proven to be the most common alleles controlling heading time (Yamagata et al 1986, Ichitani et al 1997.…”

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Genotyping the Heading Date of Male‐Sterile Rice Line II‐32A

Jiang¹,

Wei²,

Zhang³

et al. 2006

JIPB

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II-32A, an elite male-sterile line of rice (Oryza sativa L.), has been widely used for the production of hybrid rice seed in China. Heading date in most combinations using II-32A shows transgressive inheritance or similarity to the latter parent, but the genotype of II-32A with respect to major genes for heading time is unknown. This limits the further exploitation of this sterile line in breeding and hybrid seed production. Using a number of major gene heading date isogenic lines and heading date QTL near-isogenic lines, we genetically analyzed II-32B under both long-and short-day conditions. We show that II-32B carries two photoperiod-sensitive genes, E1 and E3, a recessive late-heading gene, ef-1, and a photoperiod-sensitive allele, Se-1 u . In addition we identified in II-32B a recessive inhibitor for E1 or Se-1 n and other modified photoperiod-sensitive genes. The heading-date constitution of II-32A was determined to be E 1 e 2 E 3 Se-1 u ef-1i-Se-1. CM, Luo LG, Wan JM (2006). Genotyping the heading date of malesterile rice line II-32A. J Integrat Plant Biol 48(4), 440−446. Flowering time in crops is critical for adaptation to different cultivation areas and cropping seasons. Photoperiod sensitivity (PS) and basic vegetative growth are the major determinants of heading date in rice. Several major genes controlling these traits have been identified in rice, including Ef-1 (early flowering; and Se-1 have proven to be the most common alleles controlling heading time (Yamagata et al. 1986, Ichitani et al. 1997. The stimulative effect of E 1 on PS is strong compared with that exerted by either E 2 or E 3 , and the effect of E 1 is considerably enhanced by the presence of E 3 , and even more so by the presence of both E 2 and E 3 , leading to significant delay in heading time (Yamagata et al. 1986;Cai et al. 1987;Ichitani et al. 1997Ichitani et al. , 1998Luo et al. 2001). The recessive inhibitor of PS, i-Se-1, confers early heading even under long-day conditions. Due to the ubiquitous presence of iSe-1, most early indica rice cultivars exhibit no PS, even if they carry PS genes (Ohshima et al. 1993;Ohshima and Kikuchi 1994;.A male sterile line, II-32A, derived from Indonesian paddy rice by the Hybrid Rice Research Center of Hunan Province, has desirable flowering behavior, is highly receptive to incoming pollen, and has excellent hybrid combining ability (Wang 2002). Hybrid combinations with II-32A are widely used in more than 10 provinces in China, and occupy a cropping area of 360 million hm 2 . However, the genetic basis of the moderate growth duration and the broad adaptation of combinations with II-32A are unclear. In the present study, the heading date genotype of II-32B was investigated, using as testers a range of genetic stocks varying in their content of major Hd genes or heading date QTL. The genetic basis of the wide adaptation of three-line hybrid rice involving II-32A as one parent suggests why II-32A has been so successful, Genotyping of the Heading Date of II-32A 441 and serves as a basis for th...

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Photoperiod Sensitivity Gene of Se-1 Locus Found in Photoperiod Insensitive Rice Cultivars of the Northern Limit Region of Rice Cultivation

Cited by 27 publications

References 7 publications

Heading Time Genes Responsible for the Regional Adaptability of ‘Tongil-type Short-culmed Rice Cultivars’ Developed in Korea

Heading Time Genes Responsible for the Regional Adaptability of ‘Tongil-type Short-culmed Rice Cultivars’ Developed in Korea

Identification of QTLs Conferring Genetic Variation for Heading Date among Rice Varieties at the Northern-limit of Rice Cultivation

Genotyping the Heading Date of Male‐Sterile Rice Line II‐32A

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Photoperiod Sensitivity Gene of Se-1 Locus Found in Photoperiod Insensitive Rice Cultivars of the Northern Limit Region of Rice Cultivation

Cited by 27 publications

References 7 publications

Heading Time Genes Responsible for the Regional Adaptability of &lsquo;Tongil-type Short-culmed Rice Cultivars&rsquo; Developed in Korea

Heading Time Genes Responsible for the Regional Adaptability of &lsquo;Tongil-type Short-culmed Rice Cultivars&rsquo; Developed in Korea

Identification of QTLs Conferring Genetic Variation for Heading Date among Rice Varieties at the Northern-limit of Rice Cultivation

Genotyping the Heading Date of Male‐Sterile Rice Line II‐32A

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Heading Time Genes Responsible for the Regional Adaptability of ‘Tongil-type Short-culmed Rice Cultivars’ Developed in Korea

Heading Time Genes Responsible for the Regional Adaptability of ‘Tongil-type Short-culmed Rice Cultivars’ Developed in Korea