Relationship of photosynthetic efficiency and seed-setting rate in two contrasting rice cultivars under chilling stress

Wang, L.-Z.; Xiang, Hongtao; Luo, Yuqin; Li, R.; Li, Z.-J.; Wang, C.-Y.; Meng, Yuping

doi:10.1007/s11099-016-0648-1

Cited by 18 publications

(10 citation statements)

References 35 publications

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“…KY131, a japonica rice, has been widely cultivated in the northeast region of China for nearly 20 years. A prominent characteristic of KY131 is the strong cold tolerance to cope with the frequent low temperatures that occur during the booting stage in this high-latitude region (Yao et al 2012 ; Wang et al 2016 ). In this study, a RIL population derived from a cross between DN422, a cold sensitive japonica rice, and KY131 was exposed in a cold-water environment over 3 years to acquire the PSST to map cold-tolerant genes.…”

Section: Discussionmentioning

confidence: 99%

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Identification of a cold-tolerant locus in rice (Oryza sativa L.) using bulked segregant analysis with a next-generation sequencing strategy

Sun

Yang

Wang

et al. 2018

Rice

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BackgroundCold stress can cause serious abiotic damage that limits the growth, development and yield of rice. Cold tolerance during the booting stage of rice is a key factor that can guarantee a high and stable yield under cold stress. The cold tolerance of rice is controlled by quantitative trait loci (QTLs). Based on the complex genetic basis of cold tolerance in rice, additional efforts are needed to detect reliable QTLs and identify candidate genes. In this study, recombinant inbred lines (RILs) derived from a cross between a cold sensitive variety, Dongnong422, and strongly cold-tolerant variety, Kongyu131, were used to screen for cold-tolerant loci at the booting stage of rice.ResultsA novel major QTL, qPSST6, controlling the percent seed set under cold water treatment (PSST) under the field conditions of 17 °C cold water irrigation was located on the 28.4 cM interval on chromosome 6. Using the combination of bulked-segregant analysis (BSA) and next-generation sequencing (NGS) technology (Seq-BSA), a 1.81 Mb region that contains 269 predicted genes on chromosome 6 was identified as the candidate region of qPSST6. Two genes, LOC_Os06g39740 and LOC_Os06g39750, were annotated as “response to cold” by gene ontology (GO) analysis. qRT-PCR analysis revealed that LOC_Os06g39750 was strongly induced by cold stress. Haplotype analysis also demonstrate a key role of LOC_Os06g39750 in regulating the PSST of rice, suggesting that it was the candidate gene of qPSST6.ConclusionsThe information obtained in this study is useful for gene cloning of qPSST6 and for breeding cold-tolerant varieties of rice using marker assisted selection (MAS).Electronic supplementary materialThe online version of this article (10.1186/s12284-018-0218-1) contains supplementary material, which is available to authorized users.

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Section: Discussionmentioning

confidence: 99%

“…The MAP function of QTL IciMapping 3.2 (Wang et al 2012 ) was used to construct the genetic linkage map of the RIL population, and the Kosambi’s mapping function was used to calculate the genetic distances. QTLs were detected using the inclusive composite interval mapping (ICIM) module of QTL IciMapping 3.2.…”

Section: Methodsmentioning

confidence: 99%

Identification of a cold-tolerant locus in rice (Oryza sativa L.) using bulked segregant analysis with a next-generation sequencing strategy

Sun

Yang

Wang

et al. 2018

Rice

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“…Electrolyte leakage and malondialdehyde (MDA) content are often used to assess stress-induced damage in membranes (Karimi and Ershadi, 2015;Zhang et al, 2012). Chloroplasts are among the most susceptible cellular organelles, and chilling leads to a decrease in the photosystem II maximal photochemical efficiency, which is generally expressed as the ratio of variable to maximal fluorescence ratio (F v /F m ) (Wang et al, 2016).…”

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confidence: 99%

Effects of Abscisic Acid and Nitric Oxide on Chilling Resistance and Activation of the Antioxidant System in Walnut Shoots In Vitro

Dong¹,

Qi²,

Li³

et al. 2017

J. Amer. Soc. Hort. Sci.

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The roles of abscisic acid (ABA) and nitric oxide (NO) and the relationship between NO and ABA on chilling resistance and activation of antioxidant activities in walnut (Juglans regia) shoots in vitro under chilling stress were investigated. Walnut shoots were treated with ABA, the NO donor sodium nitroprusside (SNP), ABA in combination with the NO scavenger 2-phenyl-4,4,5,5-tetramethyl-imidazoline-1-oxyl-3-oxide (PTIO), PTIO, SNP in combination with the ABA biosynthesis inhibitor fluridone (Flu), and Flu. Their effects on chilling tolerance, reactive oxygen species (ROS) levels, and the antioxidant defense system were analyzed. The results showed that ABA treatment markedly alleviated the decreases in the maximal photochemical efficiency and survival and the increases in electrolyte leakage and lipid peroxidation induced by chilling stress, suggesting that application of ABA could improve the chilling tolerance. Further analyses showed that ABA enhanced antioxidant defense and slowed down the accumulation of ROS caused by chilling. Similar results were observed when exogenous SNP was applied. ABA in combination with PTIO or PTIO alone differentially abolished these protective effects of ABA. However, treatment with NO in combination with Flu or Flu alone did not affect the SNP-induced protective effect against CI or the activation of antioxidant activities under conditions of chilling stress. In addition, ABA treatment increased the NO content under chilling conditions, which was suppressed by the ABA biosynthesis inhibitor Flu or NO scavenger PTIO. Conversely, SNP application induced the same ABA rise observed in control plants in response to chilling. Taken together, these results suggested that ABA may confer chilling tolerance in walnut shoots in vitro by enhancing the antioxidant defense system, which is partially mediated by NO, preventing the overproduction of ROS to alleviate the oxidative injury induced by chilling.

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“…Therefore, identification of morphological traits especially in early stage of rice growth having strong correlation with RSS had important significance for selecting cold tolerance rice material at booting stage [5,50]. Previously, scientists attempted different studies to fulfil this task, e.g., Shen et al [54] who analyzed correlations between 17 morphological traits with RSS through 84 NILs populations and found 11 traits, FLW, RSLL, PL, AL, AW, SIL, PHt, SL, FG, BG, and NOGP correlated with RSS at 0.01 level [52,55]. Similarly, Cui et al [26] analyzed correlations between 16 morphological traits with RSS from 29 NILs populations and showed six traits (ILBS, FG, BG, PHt, ULL, and AL × AW) had strong correlations with RSS at 0.01 level.…”

Section: Discussionmentioning

confidence: 99%

“…This study revealed strong correlation of morphological attributes with the rate of seed setting (RSS), which showed that rice plants have developed well defined phenological plasticity to cope with harsh environmental conditions (Cold stress) and to manage and divert its resources to accomplish reproductive tasks [22,30,55,56]. In addition of RSS, five other phenotypic traits (ULL, 1-2IL, RSLL, FG, and BG) showed strong association with rice cold tolerance at booting stage, as observed in many other traits associated with cold tolerance [1,26].…”

Section: Discussionmentioning

confidence: 99%

Near-Isogenic Lines of Japonica Rice Revealed New QTLs for Cold Tolerance at Booting Stage

Sun

et al. 2019

Agronomy

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Low temperature stress severely hampers rice productivity, and hence elaborating chilling-mediated physiochemical alterations and unravelling cold tolerance pathways will facilitate cold resilient rice breeding. Various cold tolerant Near-isogenic lines (NILs) selected at the booting stage through backcrossing of a japonica landrace Lijing2 (cold tolerant) with cold sensitive Towada (a japonica cultivar). The cold tolerance attributes of NILs was validated over two years by evaluating the spikelet fertility followed by correlation of nineteen morphological traits with the rate of seed setting (RSS). Results revealed BG, FG, 1-2IL, RSLL, and UIL were significantly correlated with RSS and had nearer marker interval distance with cold tolerance in QTL analysis. Two QTLs, qCTB-7-a and qCTB-7-b, were found for RSS based on a mixed linear model. Alleles of two QTLs were contributed by Lijing2 and genetic distances between the peaks were 0.00 and 0.06cM, which explained 5.70% and 8.36% variation, respectively, One QTL for 1-2IL, RSLL, and ILBS, while two QTLs for FG, BG, and UIL were also identified. These findings can be exploited to engineer low temperature stress tolerant rice in times of climate change.

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Relationship of photosynthetic efficiency and seed-setting rate in two contrasting rice cultivars under chilling stress

Cited by 18 publications

References 35 publications

Identification of a cold-tolerant locus in rice (Oryza sativa L.) using bulked segregant analysis with a next-generation sequencing strategy

Identification of a cold-tolerant locus in rice (Oryza sativa L.) using bulked segregant analysis with a next-generation sequencing strategy

Effects of Abscisic Acid and Nitric Oxide on Chilling Resistance and Activation of the Antioxidant System in Walnut Shoots In Vitro

Near-Isogenic Lines of Japonica Rice Revealed New QTLs for Cold Tolerance at Booting Stage

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