The &lt;i&gt;temperature sensitive hybrid breakdown 1&lt;/i&gt; induces low temperature-dependent intrasubspecific hybrid breakdown in rice

Yoneya, Yuuki; Wakabayashi, Tae; Kato, Kiyoaki

doi:10.1270/jsbbs.20129

Cited by 6 publications

(5 citation statements)

References 49 publications

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“…In addition, hybrid weakness is triggered by low temperature after germination. In rice, the temperature sensitivity was reported by the previous studies such as Hwc genes ( Saito et al, 2007 ), hw3/hw4 genes ( Fu et al, 2013 ), thb1 ( Yoneya et al, 2021 ) where low temperature enhanced the weakness, while Hwi genes ( Chen et al, 2013 ) enhanced the weakness at high temperature.…”

Section: Discussionmentioning

confidence: 67%

“…In general, several hybrid weakness cases in some plants were reported to be low temperature-dependent and phenotypes of weak plants were rescued at high temperature ( Saito et al, 2007 ; Alcázar et al, 2009 ; Shiragaki et al, 2021 ; Yoneya et al, 2021 ). To date, only one high temperature-dependent hybrid weakness in rice was reported ( Chen et al, 2014 ).…”

Section: Discussionmentioning

confidence: 99%

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A Novel Combination of Genes Causing Temperature-Sensitive Hybrid Weakness in Rice

et al. 2022

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Reproductive isolation is an obstacle for plant breeding when a distant cross is demanded. It can be divided into two main types based on different growth stages: prezygotic isolation and postzygotic isolation. The hybrid weakness, which is a type of postzygotic isolation, can become a problem in crop breeding. In order to overcome reproductive isolation, it is necessary to elucidate its mechanism. In this study, genetic analysis for low temperature-dependent hybrid weakness was conducted in a rice F2 population derived from Taichung 65 (T65, Japonica) and Lijiangxintuanheigu (LTH, Japonica). The weak and severe weak plants in F2 showed shorter culm length, late heading, reduced panicle number, decreased grain numbers per panicle, and impaired root development in the field. Our result also showed that hybrid weakness was affected by temperature. It was observed that 24°C enhanced hybrid weakness, whereas 34°C showed recovery from hybrid weakness. In terms of the morphology of embryos, no difference was observed. Therefore, hybrid weakness affects postembryonic development and is independent of embryogenesis. The genotypes of 126 F2 plants were determined through genotyping-by-sequencing and a linkage map consisting of 862 single nucleotide polymorphism markers was obtained. Two major quantitative trait loci (QTLs) were detected on chromosomes 1 [hybrid weakness j 1 (hwj1)] and 11 [hybrid weakness j 2 (hwj2)]. Further genotyping indicated that the hybrid weakness was due to an incompatible interaction between the T65 allele of hwj1 and the LTH allele of hwj2. A large F2 populations consisting of 5,722 plants were used for fine mapping of hwj1 and hwj2. The two loci, hwj1 and hwj2, were mapped in regions of 65-kb on chromosome 1 and 145-kb on chromosome 11, respectively. For hwj1, the 65-kb region contained 11 predicted genes, while in the hwj2 region, 22 predicted genes were identified, two of which are disease resistance-related genes. The identified genes along these regions serve as preliminary information on the molecular networks associated with hybrid weakness in rice.

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Section: Discussionmentioning

confidence: 67%

Section: Discussionmentioning

confidence: 99%

A Novel Combination of Genes Causing Temperature-Sensitive Hybrid Weakness in Rice

et al. 2022

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“…The absence of marker segregation distortion in this BC5F2 population might be due to that the population is already an advanced backcross population with high level genetic background of Ciherang as the recipient parent or the genetic distance between Ciherang and Rathu Heenati is likely close. A previous study also reported no segregation distortion found in the BC4F2 rice population produced by an intraspecific cross between YK3CSSL-6.1 and Kirara397 [29]. Segregation distortion is commonly found in crosses among divergent genotypes [30].…”

Section: Genotype and Segregation Analysesmentioning

confidence: 81%

Segregation of molecular markers associated with Bph3 gene in BC₅F₂ population derived from Ciherang rice variety as the recipient parent

Yunus,

Dadang,

Slamet

et al. 2023

IOP Conf. Ser.: Earth Environ. Sci.

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Brown planthopper (BPH), an important insect pest of rice, can cause severe damage and significant yield loss. An efficient and environmentally friendly method to control this pest is by planting resistant varieties. The brown planthopper resistance gene Bph3 from Rathu Heenati variety is closely linked to the Waxy gene that regulates amylose synthesis, the primary determinant of rice eating and cooking quality. The purposes of this study were to analyze the segregation ratio of SSR markers associated with Bph3 gene and to identify individual plants carrying homozygous allele for Bph3 gene in a BC5F2 population derived from a backcross that used Ciherang as the recurrent recipient parent. Analyses using RM589, RM586, and RM588 markers linked to Bph3 gene and RM190 marker linked to the Waxy gene indicated that the ratio of genotype segregation for each marker related to Bph3 gene did not deviate from the expected ratio with the χ 2 value was 0.956, 0.587, and 1.467 for RM589, RM586, and RM588, respectively (χ2 table = 5.991, α=0,05). All individual plants had a homozygous allele from Ciherang for Waxy gene based on the RM190 marker. As many as 25 individual plants which have homozygous Bph3 allele from Rathu Heenati and homozygous Waxy allele from Ciherang can be further developed as promising BPH-resistant rice varieties with eating and cooking quality similar to Ciherang.

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“…R or R-like proteins of NB-LRR type play a receptor-like function and participate in specific recognition of pathogens, which are likely the causal temperature-sensitive component in defense responses [ 41 ]. High temperature usually decreases plant resistance, but it occasionally activates resistance [ 15 , 41 , 47 , 48 , 49 , 50 , 51 ]. In this study, the scr8 showed dwarf, short root phenotype, and the resistance to Xoo was enhanced more than wildtype under high temperature in filed.…”

Section: Discussionmentioning

confidence: 99%

Identification and Characterization of Short Crown Root 8, a Temperature-Sensitive Mutant Associated with Crown Root Development in Rice

Wen

Wang

et al. 2021

IJMS

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Crown roots are essential for plants to obtain water and nutrients, perceive environmental changes, and synthesize plant hormones. In this study, we identified and characterized short crown root 8 (scr8), which exhibited a defective phenotype of crown root and vegetative development. Temperature treatment showed that scr8 was sensitive to temperature and that the mutant phenotypes were rescued when grown under low temperature condition (20 °C). Histological and EdU staining analysis showed that the crown root formation was hampered and that the root meristem activity was decreased in scr8. With map-based cloning strategy, the SCR8 gene was fine-mapped to an interval of 126.4 kb on chromosome 8. Sequencing analysis revealed that the sequence variations were only found in LOC_Os08g14850, which encodes a CC-NBS-LRR protein. Expression and inoculation test analysis showed that the expression level of LOC_Os08g14850 was significantly decreased under low temperature (20 °C) and that the resistance to Xanthomonas oryzae pv. Oryzae (Xoo) was enhanced in scr8. These results indicated that LOC_Os08g14850 may be the candidate of SCR8 and that its mutation activated the plant defense response, resulting in a crown root growth defect.

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The <i>temperature sensitive hybrid breakdown 1</i> induces low temperature-dependent intrasubspecific hybrid breakdown in rice

Cited by 6 publications

References 49 publications

A Novel Combination of Genes Causing Temperature-Sensitive Hybrid Weakness in Rice

A Novel Combination of Genes Causing Temperature-Sensitive Hybrid Weakness in Rice

Segregation of molecular markers associated with Bph3 gene in BC₅F₂ population derived from Ciherang rice variety as the recipient parent

Identification and Characterization of Short Crown Root 8, a Temperature-Sensitive Mutant Associated with Crown Root Development in Rice

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The <i>temperature sensitive hybrid breakdown 1</i> induces low temperature-dependent intrasubspecific hybrid breakdown in rice

Cited by 6 publications

References 49 publications

A Novel Combination of Genes Causing Temperature-Sensitive Hybrid Weakness in Rice

A Novel Combination of Genes Causing Temperature-Sensitive Hybrid Weakness in Rice

Segregation of molecular markers associated with Bph3 gene in BC5F2 population derived from Ciherang rice variety as the recipient parent

Identification and Characterization of Short Crown Root 8, a Temperature-Sensitive Mutant Associated with Crown Root Development in Rice

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Segregation of molecular markers associated with Bph3 gene in BC₅F₂ population derived from Ciherang rice variety as the recipient parent