Genetic analysis of hybrid breakdown in a japonica/indica cross of rice

Kubo, Takahiko; Yoshimura, A.; Khush, G. S.; Brar, D. S.; Hardy, B.

doi:10.1142/9789812814319_0012

Cited by 11 publications

(13 citation statements)

References 0 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Thus, plant NBS-LRRs have a greater potential to establish hybrid weakness and to become an evolutionary force in plant speciation compared to other gene classes. Hybrid weakness has been reported not only in rice (Amemiya and Akamine 1963;Sato and Morishima 1988;Fukuoka et al 1998, Kubo and Yoshimura 2002Matsubara et al 2007;Yamamoto et al 2007;Miura et al 2008), but also in other plant species . Identifying the causal genes of this phenomenon in other plants will determine the validity of this hypothesis.…”

Section: Evolutionary Force In the Establishment Of Bdm Incompatibilimentioning

confidence: 99%

“…But in other plants, the physiological and molecular mechanisms for the appearance of weakness phenotype remain to be established. Rice has great potential to investigate and understand this phenomenon as weakness phenotype is observed in numerous intra and inter-specific crosses (Amemiya and Akamine 1963;Sato and Morishima 1988;Fukuoka et al 1998Fukuoka et al , 2005Kubo and Yoshimura 2002;Matsubara et al 2007;Yamamoto et al 2007;Miura et al 2008).…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Gain of deleterious function causes an autoimmune response and Bateson–Dobzhansky–Muller incompatibility in rice

et al. 2010

View full text Add to dashboard Cite

Reproductive isolation plays an important role in speciation as it restricts gene flow and accelerates genetic divergence between formerly interbreeding population. In rice, hybrid breakdown is a common reproductive isolation observed in both intra and inter-specific crosses. It is a type of post-zygotic reproductive isolation in which sterility and weakness are manifested in the F(2) and later generations. In this study, the physiological and molecular basis of hybrid breakdown caused by two recessive genes, hbd2 and hbd3, in a cross between japonica variety, Koshihikari, and indica variety, Habataki, were investigated. Fine mapping of hbd2 resulted in the identification of the causal gene as casein kinase I (CKI1). Further analysis revealed that hbd2-CKI1 allele gains its deleterious function that causes the weakness phenotype by a change of one amino acid. As for the other gene, hbd3 was mapped to the NBS-LRR gene cluster region. It is the most common class of R-gene that triggers the immune signal in response to pathogen attack. Expression analysis of pathogen response marker genes suggested that weakness phenotype in this hybrid breakdown can be attributed to an autoimmune response. So far, this is the first evidence linking autoimmune response to post-zygotic isolation in rice. This finding provides a new insight in understanding the molecular and evolutionary mechanisms establishing post-zygotic isolation in plants.

show abstract

Section: Evolutionary Force In the Establishment Of Bdm Incompatibilimentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Gain of deleterious function causes an autoimmune response and Bateson–Dobzhansky–Muller incompatibility in rice

et al. 2010

View full text Add to dashboard Cite

show abstract

“…Therefore, the developmental phase of the S 6 locus-mediated abortion and consequent segregation pattern are both unequivocally distinguished from those mediated by the Cif/cim genes, although the possibility cannot be ruled out that abortions at different developmental phases are caused by pleiotropic effects of a single gene, which would resemble a phenomenon caused by the Tcb1 locus in maize (Kermicle 2006). The hybrid sterility loci, S 1 (Sano 1990), S 5 (Yanagihara et al 1995), S 8 (Singh et al 2006), S 10 (Sano et al 1994, and S 26 (Kubo and Yoshimura 2001), have also been mapped to chromosome 6, a mapping procedure carried out using different pairs of crossing parents. These genes were mapped in chromosomal regions apart from the S 6 locus, and segregation analyses of marker genes tightly linked with these loci also indicated that the segregation distortion caused by these loci was independent of that by the S 6 locus (our unpublished data).…”

Section: Tablementioning

confidence: 99%

The Evolution of Sex-Independent Transmission Ratio Distortion Involving Multiple Allelic Interactions at a Single Locus in Rice

Koide¹,

Ikenaga²,

Sawamura³

et al. 2008

Genetics

View full text Add to dashboard Cite

Transmission ratio distortion (TRD) is frequently observed in inter-and intraspecific hybrids of plants, leading to a violation of Mendelian inheritance. Sex-independent TRD (si TRD) was detected in a hybrid between Asian cultivated rice and its wild ancestor. Here we examined how si TRD caused by an allelic interaction at a specific locus arose in Asian rice species. The si TRD is controlled by the S 6 locus via a mechanism in which the S 6 allele acts as a gamete eliminator, and both the male and female gametes possessing the opposite allele (S 6 a ) are aborted only in heterozygotes (S 6 /S 6 a ). Fine mapping revealed that the S 6 locus is located near the centromere of chromosome 6. Testcross experiments using near-isogenic lines (NILs) carrying either the S 6 or S 6 a alleles revealed that Asian rice strains frequently harbor an additional allele (S 6 n ) the presence of which, in heterozygotic states (S 6 /S 6 n and S 6 a /S 6 n ), does not result in si TRD. A prominent reduction in the nucleotide diversity of S 6 or S 6 a carriers relative to that of S 6 n carriers was detected in the chromosomal region. These results suggest that the two incompatible alleles (S 6 and S 6 a ) arose independently from S 6 n and established genetically discontinuous relationships between limited constituents of the Asian rice population.

show abstract

“…In rice, hybrid weakness has been reported in some inter-specific and intra-specific combinations (Oka 1957, Amemiya and Akemine 1963, Chu and Oka 1972, Sato and Hayashi 1983, Sato and Morishima 1987, Sato and Morishima 1988, Okuno 1985, Kubo and Yoshimura 2002, Matsubara et al 2007, Yamamoto et al 2007. The F 1 hybrid weakness (F 1 HW) of rice has been genetically explained by the function of a set of complementary genes (Oka 1957, Amemiya and Akemine 1963, Chu and Oka 1972, Sato and Hayashi 1983, Ichitani et al 2001.…”

Section: Introductionmentioning

confidence: 99%

Developmental Observation and High Temperature Rescue from Hybrid Weakness in a Cross between Japanese Rice Cultivars and Peruvian Rice Cultivar 'Jamaica'

et al. 2007

View full text Add to dashboard Cite

The weak growth occurring in hybrids derived from crosses between two normal strains is referred to as hybrid weakness. F 1 hybrid weakness (F 1 HW) in a cross between a Peruvian rice cultivar 'Jamaica' and Japanese rice cultivars has been reported and was considered to be controlled by a set of complementary genes, Hwc1 and Hwc2. We observed the development of F 1 plants between Nipponbare and Jamaica (NJF 1 s). NJF 1 s were characterized by short roots, rolled leaves and a short stature. Although the NJF 1 embryos were normal, the growth of the primary roots was arrested and in most cases, they could not emerge from seeds of the hybrids. Histological observation of the root apical meristem (RAM) at 10 days after sowing revealed that the zone of cell division in the NJF 1 plants was lost, and that the cells were not short enough to explain the reduced root length of the NJF 1 plants. Thus, it was suggested that the shorter roots the NJF 1 plants might be due to reduced cell division. Although no distinct morphological abnormalities in the shoot apical meristem were observed, leaf primordium production was delayed in the NJF 1 plants. Inhibition of root elongation in this type of hybrid weakness was alleviated under high temperature (34°C) conditions in diverse genetic backgrounds. The threshold temperature required for the recovery of root growth from hybrid weakness seemed to range from 29 to 30°C. Among 85 NJF 1 plants that germinated and grew at 34°C for 10 days, and then outdoors, 18 plants eventually flowered. These plants were dwarf and their flowering time was delayed compared with that of their parents. In spite of their abnormal development, they were fertile. Thus, it is suggested that high temperature treatment was also effective to overcome hybrid weakness and to obtain next generation in this cross combination.

show abstract

Genetic analysis of hybrid breakdown in a japonica/indica cross of rice

Cited by 11 publications

References 0 publications

Gain of deleterious function causes an autoimmune response and Bateson–Dobzhansky–Muller incompatibility in rice

Gain of deleterious function causes an autoimmune response and Bateson–Dobzhansky–Muller incompatibility in rice

The Evolution of Sex-Independent Transmission Ratio Distortion Involving Multiple Allelic Interactions at a Single Locus in Rice

Developmental Observation and High Temperature Rescue from Hybrid Weakness in a Cross between Japanese Rice Cultivars and Peruvian Rice Cultivar 'Jamaica'

Contact Info

Product

Resources

About