Reactive oxygen species induced by heat stress during grain filling of rice ( Oryza sativa L.) are involved in occurrence of grain chalkiness

Suriyasak, Chetphilin; Harano, Keisuke; Tanamachi, Koichiro; Matsuo, Kazuhiro; Tamada, Aina; Iwaya‐Inoue, Mari; Ishibashi, Yoshihiro

doi:10.1016/j.jplph.2017.05.015

Cited by 58 publications

(32 citation statements)

References 28 publications

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“…In general, temperature has a great effect on grain chalkiness and high temperature increases chalkiness in grains ( Tsukaguchi and Iida, 2015 ; Wang Z.M. et al, 2015 ; Jing et al, 2016b ; Kaneko et al, 2016 ; Suriyasak et al, 2017 ). Li et al (2011) study indicated that compared with DHT (day high temperature), NHT (night high temperature) exerted less effect on chalkiness.…”

Section: Discussionmentioning

confidence: 99%

Genetic Dissection of qPCG1 for a Quantitative Trait Locus for Percentage of Chalky Grain in Rice (Oryza sativa L.)

Zhu

Zhang

et al. 2018

Front. Plant Sci.

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Rice is a pivotal cereal crop that provides the staple food for more than half of the world’s population. Along with improvements in the standard of living, people not only pay attention to the grain yield but also to the grain quality. Chalkiness is one of the most important index of grain quality. In this study, qPCG1, a QTL for percentage of chalky grain, was mapped in an interval with a physical distance about 139 kb on chromosome 1 by residual heterozygous line (RHL) method. qPCG1 was incomplete dominant and the additive effect plays a major role and explained 6.8–21.9% of phenotypic variance within the heterogeneous region on chromosome 1. The effect of allele from Zhonghui9308 was decreasing the percentage of chalky grains (PCG). Microscope observation results indicated that there are great differences in the shape, structure and arrangement of starch granule between the chalky part and transparent part. Analysis of starch physicochemical properties showed that the total starch content, amylose content and chain length distribution of amylopectin changed while the protein contents were not apparently affected with the changed chalkiness. qPCG1 had little influence on main agronomic traits and it might be useful in rice breeding for it did not bring negative effect on grain yield while reducing the chalkiness.

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Section: Discussionmentioning

confidence: 99%

Genetic Dissection of qPCG1 for a Quantitative Trait Locus for Percentage of Chalky Grain in Rice (Oryza sativa L.)

Zhu

Zhang

et al. 2018

Front. Plant Sci.

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“…Suhu tinggi pada pembungaan dapat menyebabkan sterilitas polen sehingga terjadi penurunan hasil padi (Hakata et al, 2017;Yaliang et al, 2019). Cekaman suhu tinggi pada saat fase pengisian biji mengakibatkan pengapuran pada bulir padi akibat dari peningkatan α-amilase yang dapat menghidrolisis pati (Suriyasak et al, 2017).…”

Section: Kata Kunci: Fertilitas Indeks Toleransi Cekaman Perubahan unclassified

Dampak Suhu Tinggi terhadap Pertumbuhan dan Hasil Tanaman Padi

Jaisyurahman¹,

Wirnas²,

TRIKOESOEMANINGTYAS³

et al. 2020

J Agron Indonesia

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Global warming becomes a pressure in food production sustainability because it affected crop growth and development. The purpose of this study was to obtain information on the effect of high-temperature stress on the growth and development phase of rice and to evaluate the genotype for tolerance to high-temperature stress. Two environment conditions were used in the field and greenhouse of IPB Cikabayan experimental field, IPB University from August 2016 until February 2017. The study used varieties of IPB 4S, IPB 6R, Mekongga, and Situ Patenggang. High-temperature treatment was done by transferring the rice plants to the greenhouse at 50 days after transplanting. Observations were made on the generative phase in two different environmental conditions. The results showed that the total tillers number, filled grain number per panicle, unfilled grain number per panicle, total grain number per panicle, grain filling rate, percentage of filled grain and filled grain weight per plant had different responses among rice genotypes due to high-temperature stress. High-temperature decreased pollen fertility in all genotypes, which classified IPB 4S as a sensitive genotype and Mekongga as a tolerant genotype. This information could be useful for development and improving rice variety to anticipate high-temperature stress. Keywords: Climate change, fertility, pollen, stress tolerance index

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“…High temperatures also induce the upregulation of genes associated with starch hydrolysis, including starch debranching enzyme ( DBE ) and α-amylase genes ( Amy1A , Amy1C , Amy3A , Amy3D , and Amy3E ), resulting in increased chalkiness and loosely-packed spherical starch granules in the rice grain [ 8 , 11 ]. In plant cells, high temperature stress also triggers the expression of heat shock transcription factor ( Hsf ) genes [ 12 ] and NADPH oxidase-related genes, as well as genes associated with gibberellin (GA) and/or abscisic acid (ABA) catabolism, and the expression of these genes leads to reactive oxygen species (ROS) accumulation and chalky grains [ 13 ]. These previous studies have provided an indication of the molecular mechanisms and regulatory networks associated with rice quality that are affected by elevated temperatures during the grain-filling stage.…”

Section: Introductionmentioning

confidence: 99%

Cytosine methylations in the promoter regions of genes involved in the cellular oxidation equilibrium pathways affect rice heat tolerance

Zhang

Zhang³

et al. 2020

BMC Genomics

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Background: High temperatures, particularly at night, decrease rice yield and quality. As high nighttime temperatures (HNTs) become increasingly frequent due to climate change, it is imperative to develop rice crops that tolerate HNTs. DNA methylation may represent a potential avenue for HNT-tolerant rice strain development, as this mechanism regulates gene activity and cellular phenotype in response to adverse environmental conditions without changing the nucleotide sequence. Results: After HNT exposure, the methylation patterns of cytosines in the CHH context differed noticeably between two coisogenic rice strains with significantly different levels in heat tolerance. Methylation differences between strains were primarily observed on successive cytosines in the promoter or downstream regions of transcription factors and transposon elements. In contrast to the heat-sensitive rice strain, the regions 358-359 bp and 2-60 bp downstream of two basal transcriptional factors (TFIID subunit 11 and mediator of RNA polymerase II transcription subunit 31, respectively) were fully demethylated in the heat-tolerant strain after HNT exposure. In the heat-tolerant strain, HNTs reversed the methylation patterns of successive cytosines in the promoter regions of various genes involved in abscisic acid (ABA)-related reactive oxygen species (ROS) equilibrium pathways, including the pentatricopeptide repeat domain gene PPR (LOC_Os07g28900) and the homeobox domain gene homeobox (LOC_ Os01g19694). Indeed, PRR expression was inhibited in heat-sensitive rice strains, and the methylation rates of the cytosines in the promoter region of PRR were greater in heat-sensitive strains as compared to heat-tolerant strains. Conclusions: After HNT exposure, cytosines in the CHH context were more likely than cytosines in other contexts to be methylated differently between the heat-sensitive and heat-tolerant rice strains. Methylation in the promoter regions of the genes associated with ABA-related oxidation and ROS scavenging improved heat tolerance in rice. Our results help to clarify the molecular mechanisms underlying rice heat tolerance.

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Reactive oxygen species induced by heat stress during grain filling of rice ( Oryza sativa L.) are involved in occurrence of grain chalkiness

Cited by 58 publications

References 28 publications

Genetic Dissection of qPCG1 for a Quantitative Trait Locus for Percentage of Chalky Grain in Rice (Oryza sativa L.)

Genetic Dissection of qPCG1 for a Quantitative Trait Locus for Percentage of Chalky Grain in Rice (Oryza sativa L.)

Dampak Suhu Tinggi terhadap Pertumbuhan dan Hasil Tanaman Padi

Cytosine methylations in the promoter regions of genes involved in the cellular oxidation equilibrium pathways affect rice heat tolerance

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