QTL analyses for anther length and dehiscence at flowering as traits for the tolerance of extreme temperatures in rice (Oryza sativa L.)

Tazib, Tanveer; Kobayashi, Yuriko; Koyama, Hiroyuki; Matsui, Tsutomu

doi:10.1007/s10681-014-1291-1

Cited by 33 publications

(21 citation statements)

References 25 publications

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“…Tazib et al . 13 detected four major QTLs for BDL and confirmed the effect of one with CSSLs. Our results support the validity of breeding with the QTLs.…”

Section: Discussionmentioning

confidence: 52%

Effect of long anther dehiscence on seed set at high temperatures during flowering in rice (Oryza sativa L.)

Matsui

Hasegawa

2019

Sci Rep

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Countermeasures that can mitigate the global warming impact on rice production are needed. The large dehiscence of anther for pollen dispersal is one trait that shows tolerance of seed set to high temperatures under the global warming. The aim of this study is to determine the effect of long anther dehiscence on high temperature tolerance. Seven chromosome segment substitution lines and the seed parent with the different dehiscence lengths were subjected to high daytime temperatures. Elongation of dehiscence formed at the base of anther (BDL) by 100 µm mitigated the occurrence of high temperature induced sterility by 20% and improved tolerance to the high temperature by 0.66 °C. Relationship between the seed set and BDL was well explained by pollination, showing that quantitative information provided in the present experiment is reliable. The information is expected to be used in estimation of global warming impact and making countermeasures for it.

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“…Tazib et al . 13 detected four major QTLs for BDL and confirmed the effect of one with CSSLs. Our results support the validity of breeding with the QTLs.…”

Section: Discussionmentioning

confidence: 52%

Effect of long anther dehiscence on seed set at high temperatures during flowering in rice (Oryza sativa L.)

Matsui

Hasegawa

2019

Sci Rep

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“…60) The trait was subjected for Quantitative Trait Locus (QTL) analyses using Backcross Inbred Lines (BILs) and Chromosome Segment Substitution Lines (CSSLs), resulted in the detection of some effective QTLs for future marker-assisted breeding of heat-tolerant genotypes. 65,69)…”

Section: Adaptation Of Asian Rice Culture To Elevated [Co2] and Globamentioning

confidence: 99%

“…Significant progress is also seen in the studies on heat stress tolerance: the clarification of the mechanism for heat-stress tolerance, 29,57) the identification of the length of basal dehiscence of anther as a genetic trait for the tolerance, 34,60) and the identification of QTLs for controlling the dehiscence length. 65,69) Further study is needed towards development of heat-stress-tolerant genotypes using those QTLs identified, while exploring for other traits that may also be associated with the heat-stress tolerance.…”

Section: Further Research Needs —Concluding Remarks—mentioning

confidence: 99%

Global warming and rice production in Asia: Modeling, impact prediction and adaptation

Horie

2019

Proc. Jpn. Acad., Ser. B

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Since the projection of global warming emerged in 1980s with the potential of laying enormous impacts on agriculture and food security of the world, we have conducted experimental and modeling studies for clarifying its effects on rice production in Asia and for developing adaptive rice production technologies. On the basis of measurement of rice responses to climate and carbon dioxide concentration ([CO2]), the dynamic process model named SIMRIW was developed to predict global warming effects on irrigated rice. The model predicted differential regional effects of the projected global warming by doubling [CO2] on the rice yield over Asia, and indicated that high tolerance to heat-induced spikelet sterility and high yield potential under elevated [CO2] are the two important characteristics required for rice genotypes adaptive to global warming environment. Further, genetic traits associated with these characteristics and their genetic resources for breeding adaptive genotypes were identified from diverse rice germplasms. This article reviews our initiative studies in the light of the recent studies, and points out further research that is needed for better understanding and overcoming of this unprecedentedly large problem.

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“…Thereafter many research groups have mapped QTLs for heat stress tolerance using F 2 , back cross inbred lines (BIL) and recombinant inbred lines (RIL) populations, evaluated at the time of heading in controlled environment conditions (Chang-Lan et al 2005 ; Chen et al 2008 ; Zhang et al 2008 , 2009 ; Jagadish et al 2010b ; Xiao et al 2011a ; Ye et al 2012 , 2015 ; Cheng et al 2012 ; and Poli et al 2013 ). Some of these studies created high temperature condition for phenotyping by late planting in open field (Xiao et al 2011b ; Tazib et al 2015 ; and Zhao et al 2016 ). Almost all of these studies employed RFLP or SSR markers, except Ye et al ( 2012 , 2015 ), who used 300 SNP markers for the QTL mapping.…”

Section: Introductionmentioning

confidence: 99%

High Resolution Mapping of QTLs for Heat Tolerance in Rice Using a 5K SNP Array

Prakash

et al. 2017

Rice

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BackgroundHeat stress is one of the major abiotic threats to rice production, next to drought and salinity stress. Incidence of heat stress at reproductive phase of the crop results in abnormal pollination leading to floret sterility, low seed set and poor grain quality. Identification of QTLs and causal genes for heat stress tolerance at flowering will facilitate breeding for improved heat tolerance in rice. In the present study, we used 272 F8 recombinant inbred lines derived from a cross between Nagina22, a well-known heat tolerant Aus cultivar and IR64, a heat sensitive popular Indica rice variety to map the QTLs for heat tolerance.ResultsTo enable precise phenotyping for heat stress tolerance, we used a controlled phenotyping facility available at ICAR-Indian Institute of Wheat and Barley Research, Karnal, India. Based on ‘days to 50% flowering’ data of the RILs, we followed staggered sowing to synchronize flowering to impose heat stress at uniform stage. Using the Illumina infinium 5K SNP array for genotyping the parents and the RILs, and stress susceptibility and stress tolerance indices (SSI and STI) of percent spikelet sterility and yield per plant (g), we identified five QTLs on chromosomes 3, 5, 9 and 12. The identified QTLs explained phenotypic variation in the range of 6.27 to 21. 29%. Of these five QTLs, two high effect QTLs, one novel (qSTIPSS9.1) and one known (qSTIY5.1/qSSIY5.2), were mapped in less than 400 Kbp genomic regions, comprising of 65 and 54 genes, respectively.ConclusionsThe present study identified two major QTLs for heat tolerance in rice in narrow physical intervals, which can be employed for crop improvement by marker assisted selection (MAS) after development of suitable scorable markers for breeding of high yielding heat tolerant rice varieties. This is the first report of a major QTL for heat tolerance on chromosome 9 of rice. Further, a known QTL for heat tolerance on chromosome 5 was narrowed down from 23 Mb to 331 Kbp in this study.Electronic supplementary materialThe online version of this article (doi:10.1186/s12284-017-0167-0) contains supplementary material, which is available to authorized users.

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QTL analyses for anther length and dehiscence at flowering as traits for the tolerance of extreme temperatures in rice (Oryza sativa L.)

Cited by 33 publications

References 25 publications

Effect of long anther dehiscence on seed set at high temperatures during flowering in rice (Oryza sativa L.)

Effect of long anther dehiscence on seed set at high temperatures during flowering in rice (Oryza sativa L.)

Global warming and rice production in Asia: Modeling, impact prediction and adaptation

High Resolution Mapping of QTLs for Heat Tolerance in Rice Using a 5K SNP Array

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