Kari Baghyalakshmi, Selvaraj Ramchander, Nallathambi Jagadeeshselvam, Muthurajan Raveendran, Paramasiwam Jeyaprakash
{"title":"通过转录组比较分析揭示回交近交系水稻(Oryza sativa L. )的抗旱分子机制","authors":"Kari Baghyalakshmi, Selvaraj Ramchander, Nallathambi Jagadeeshselvam, Muthurajan Raveendran, Paramasiwam Jeyaprakash","doi":"10.1111/pbr.13208","DOIUrl":null,"url":null,"abstract":"Rice production is severely hampered by drought stress, which causes enormous economic losses. The issue of global climate change is gaining importance, and hence development of rice genotypes tolerant to drought stress is becoming more critical. To address this issue, backcross inbred lines (BILs) developed were subjected to drought stress, and their molecular mechanism was studied. The drought‐tolerant parent Apo and drought‐susceptible, high‐yielding IR64 along with two BILs, namely, CB 229 (<jats:italic>qDTY</jats:italic><jats:sub><jats:italic>2.2</jats:italic></jats:sub> + <jats:italic>qDTY</jats:italic><jats:sub><jats:italic>3.1</jats:italic></jats:sub> + <jats:italic>qDTY</jats:italic><jats:sub><jats:italic>8.1</jats:italic></jats:sub>) and CB 193‐3 (<jats:italic>qDTY</jats:italic><jats:sub><jats:italic>3.1</jats:italic></jats:sub> + <jats:italic>qDTY</jats:italic><jats:sub><jats:italic>8.1</jats:italic></jats:sub>) were tested in a greenhouse for their response to drought. In this study, CB 229 showed better performance under water stress irrigated conditions; it was on par with IR64. Drought‐responsive transcriptome profiling was carried out in both the parents and the superior BIL CB 229 through the RNA‐Seq approach. About 3050 differentially expressed genes (DEGs) (2021 upregulated and 1029 downregulated) were detected in tolerant BIL CB 229 in drought stress. Most of the DEGs were involved in carbohydrate metabolism and the formation of cell walls, as well as genes associated with metabolite adaptability, ROS homeostasis and post‐transcriptional regulation. Genes such as chaperone protein, senescence‐induced receptor‐like serine, mannose‐6‐phosphate isomerase, aquaporin and heat shock proteins (LOC_Os02g26840, LOC_Os02g25720, LOC_Os07g35570, LOC_Os01g64970, etc.) were upregulated in the tolerant Apo and CB 229. It was observed that the BIL CB 229 yielded higher grains than both parents under moisture stress. Ninety‐four genes in the quantitative trait loci (QTLs) region were found to be differentially regulated in CB 229, Apo and IR64. Out of 94, nine genes co‐localized within the QTL <jats:italic>qDTY</jats:italic><jats:sub><jats:italic>2.2</jats:italic></jats:sub>, 12 genes within <jats:italic>qDTY</jats:italic><jats:sub><jats:italic>3.1</jats:italic></jats:sub> and four genes within <jats:italic>qDTY</jats:italic><jats:sub><jats:italic>8.1</jats:italic></jats:sub> were differentially upregulated in CB 229 and downregulated in the susceptible genotype. The study revealed that the QTLs <jats:italic>qDTY</jats:italic><jats:sub><jats:italic>2.2</jats:italic></jats:sub>, <jats:italic>qDTY</jats:italic><jats:sub><jats:italic>3.1</jats:italic></jats:sub> and <jats:italic>qDTY</jats:italic><jats:sub><jats:italic>8.1</jats:italic></jats:sub> are found to have complementary effects and offer enhanced levels of tolerance against drought due to complementation. Additionally, this analysis discovered new DEGs that may be involved in functions related to drought tolerance but lack function annotations. Future research can focus on a few of the significant DEGs found in this study. Taken together, our findings provide insight into drought tolerance mechanisms and could assist the development of novel strategies for improving drought tolerance in rice.","PeriodicalId":20228,"journal":{"name":"Plant Breeding","volume":"24 1","pages":""},"PeriodicalIF":1.5000,"publicationDate":"2024-07-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Comparative transcriptome profiling to untie the drought tolerance molecular mechanism of backcross rice (Oryza sativa L.) inbred\",\"authors\":\"Kari Baghyalakshmi, Selvaraj Ramchander, Nallathambi Jagadeeshselvam, Muthurajan Raveendran, Paramasiwam Jeyaprakash\",\"doi\":\"10.1111/pbr.13208\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"Rice production is severely hampered by drought stress, which causes enormous economic losses. The issue of global climate change is gaining importance, and hence development of rice genotypes tolerant to drought stress is becoming more critical. To address this issue, backcross inbred lines (BILs) developed were subjected to drought stress, and their molecular mechanism was studied. The drought‐tolerant parent Apo and drought‐susceptible, high‐yielding IR64 along with two BILs, namely, CB 229 (<jats:italic>qDTY</jats:italic><jats:sub><jats:italic>2.2</jats:italic></jats:sub> + <jats:italic>qDTY</jats:italic><jats:sub><jats:italic>3.1</jats:italic></jats:sub> + <jats:italic>qDTY</jats:italic><jats:sub><jats:italic>8.1</jats:italic></jats:sub>) and CB 193‐3 (<jats:italic>qDTY</jats:italic><jats:sub><jats:italic>3.1</jats:italic></jats:sub> + <jats:italic>qDTY</jats:italic><jats:sub><jats:italic>8.1</jats:italic></jats:sub>) were tested in a greenhouse for their response to drought. In this study, CB 229 showed better performance under water stress irrigated conditions; it was on par with IR64. Drought‐responsive transcriptome profiling was carried out in both the parents and the superior BIL CB 229 through the RNA‐Seq approach. About 3050 differentially expressed genes (DEGs) (2021 upregulated and 1029 downregulated) were detected in tolerant BIL CB 229 in drought stress. Most of the DEGs were involved in carbohydrate metabolism and the formation of cell walls, as well as genes associated with metabolite adaptability, ROS homeostasis and post‐transcriptional regulation. Genes such as chaperone protein, senescence‐induced receptor‐like serine, mannose‐6‐phosphate isomerase, aquaporin and heat shock proteins (LOC_Os02g26840, LOC_Os02g25720, LOC_Os07g35570, LOC_Os01g64970, etc.) were upregulated in the tolerant Apo and CB 229. It was observed that the BIL CB 229 yielded higher grains than both parents under moisture stress. Ninety‐four genes in the quantitative trait loci (QTLs) region were found to be differentially regulated in CB 229, Apo and IR64. Out of 94, nine genes co‐localized within the QTL <jats:italic>qDTY</jats:italic><jats:sub><jats:italic>2.2</jats:italic></jats:sub>, 12 genes within <jats:italic>qDTY</jats:italic><jats:sub><jats:italic>3.1</jats:italic></jats:sub> and four genes within <jats:italic>qDTY</jats:italic><jats:sub><jats:italic>8.1</jats:italic></jats:sub> were differentially upregulated in CB 229 and downregulated in the susceptible genotype. The study revealed that the QTLs <jats:italic>qDTY</jats:italic><jats:sub><jats:italic>2.2</jats:italic></jats:sub>, <jats:italic>qDTY</jats:italic><jats:sub><jats:italic>3.1</jats:italic></jats:sub> and <jats:italic>qDTY</jats:italic><jats:sub><jats:italic>8.1</jats:italic></jats:sub> are found to have complementary effects and offer enhanced levels of tolerance against drought due to complementation. Additionally, this analysis discovered new DEGs that may be involved in functions related to drought tolerance but lack function annotations. Future research can focus on a few of the significant DEGs found in this study. Taken together, our findings provide insight into drought tolerance mechanisms and could assist the development of novel strategies for improving drought tolerance in rice.\",\"PeriodicalId\":20228,\"journal\":{\"name\":\"Plant Breeding\",\"volume\":\"24 1\",\"pages\":\"\"},\"PeriodicalIF\":1.5000,\"publicationDate\":\"2024-07-22\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Plant Breeding\",\"FirstCategoryId\":\"97\",\"ListUrlMain\":\"https://doi.org/10.1111/pbr.13208\",\"RegionNum\":4,\"RegionCategory\":\"农林科学\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q2\",\"JCRName\":\"AGRONOMY\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Plant Breeding","FirstCategoryId":"97","ListUrlMain":"https://doi.org/10.1111/pbr.13208","RegionNum":4,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q2","JCRName":"AGRONOMY","Score":null,"Total":0}
Comparative transcriptome profiling to untie the drought tolerance molecular mechanism of backcross rice (Oryza sativa L.) inbred
Rice production is severely hampered by drought stress, which causes enormous economic losses. The issue of global climate change is gaining importance, and hence development of rice genotypes tolerant to drought stress is becoming more critical. To address this issue, backcross inbred lines (BILs) developed were subjected to drought stress, and their molecular mechanism was studied. The drought‐tolerant parent Apo and drought‐susceptible, high‐yielding IR64 along with two BILs, namely, CB 229 (qDTY2.2 + qDTY3.1 + qDTY8.1) and CB 193‐3 (qDTY3.1 + qDTY8.1) were tested in a greenhouse for their response to drought. In this study, CB 229 showed better performance under water stress irrigated conditions; it was on par with IR64. Drought‐responsive transcriptome profiling was carried out in both the parents and the superior BIL CB 229 through the RNA‐Seq approach. About 3050 differentially expressed genes (DEGs) (2021 upregulated and 1029 downregulated) were detected in tolerant BIL CB 229 in drought stress. Most of the DEGs were involved in carbohydrate metabolism and the formation of cell walls, as well as genes associated with metabolite adaptability, ROS homeostasis and post‐transcriptional regulation. Genes such as chaperone protein, senescence‐induced receptor‐like serine, mannose‐6‐phosphate isomerase, aquaporin and heat shock proteins (LOC_Os02g26840, LOC_Os02g25720, LOC_Os07g35570, LOC_Os01g64970, etc.) were upregulated in the tolerant Apo and CB 229. It was observed that the BIL CB 229 yielded higher grains than both parents under moisture stress. Ninety‐four genes in the quantitative trait loci (QTLs) region were found to be differentially regulated in CB 229, Apo and IR64. Out of 94, nine genes co‐localized within the QTL qDTY2.2, 12 genes within qDTY3.1 and four genes within qDTY8.1 were differentially upregulated in CB 229 and downregulated in the susceptible genotype. The study revealed that the QTLs qDTY2.2, qDTY3.1 and qDTY8.1 are found to have complementary effects and offer enhanced levels of tolerance against drought due to complementation. Additionally, this analysis discovered new DEGs that may be involved in functions related to drought tolerance but lack function annotations. Future research can focus on a few of the significant DEGs found in this study. Taken together, our findings provide insight into drought tolerance mechanisms and could assist the development of novel strategies for improving drought tolerance in rice.
期刊介绍:
PLANT BREEDING publishes full-length original manuscripts and review articles on all aspects of plant improvement, breeding methodologies, and genetics to include qualitative and quantitative inheritance and genomics of major crop species. PLANT BREEDING provides readers with cutting-edge information on use of molecular techniques and genomics as they relate to improving gain from selection. Since its subject matter embraces all aspects of crop improvement, its content is sought after by both industry and academia. Fields of interest: Genetics of cultivated plants as well as research in practical plant breeding.