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Zinc finger protein ZFP36 and pyruvate dehydrogenase kinase PDK1 function in ABA-mediated aluminum tolerance in rice

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The Crop Journal 2024年第5期12卷 1483-1495页

作者： Nana Su Yanning Gong Xin Hou Xing Liu Sergey Shabala Vadim Demidchik Min Yu Mingyi Jiang Liping Huang College of Life Sciences Nanjing Agricultural UniversityNanjing 210095JiangsuChina International Research Center for Environmental Membrane Biology College of Food Science and EngineeringFoshan UniversityFoshan 528000GuangdongChina Tasmania Institute of Agriculture University of TasmaniaHobartTAS 7001Australia Department of Plant Cell Biology and Bioengineering Biological FacultyBelarusian State UniversityMinsk 220030Belarus College of Life Sciences Wuhan UniversityWuhan 430072HubeiChina

aluminum(Al)toxicity poses a significant constraint on field crop yields in acid *** finger protein36(ZFP36)is well-documented for its pivotal role in enhancing tolerance to both drought and oxidative stress in *** study unveils a novel function of ZFP36 modulated by abscisic acid(ABA)-dependent mechanisms,specifically aimed at alleviating Al toxicity in *** Al stress,the expression of ZFP36significantly increased through an ABA-dependent *** down ZFP36 heightened Al sensitivity,while overexpressing ZFP36 conferred increased resistance to Al ***,our investigations revealed a physical interaction between ZFP36 and pyruvate dehydrogenase kinase 1 in rice(OsPDK1).Biochemical assays further elucidated that OsPDK1 phosphorylates ZFP36 at the amino acid site 73–*** experiments demonstrated that ZFP36 positively regulates the expression of ascorbate peroxidases(OsAPX1)and OsALS1 by binding to specific elements in their upstream segments in *** genetic and phenotypic analyses,we unveiled that OsPDK1 influences ABA-triggered antioxidant defense to alleviate Al toxicity by interacting with *** summary,our study underscores that pyruvate dehydrogenase kinase 1(OsPDK1)phosphorylates ZFP36 to modulate the activities of antioxidant enzymes via an ABA-dependent pathway,influencing tolerance of rice to soil Al toxicity.

关键词： ZFP36 OsPDK1 ABA signaling aluminum tolerance

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Evaluation on Chinese Bread Wheat Landraces for Low pH and aluminum tolerance Using Hydroponic Screening

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Agricultural Sciences in China 2009年第3期8卷 285-292页

作者： DAI Shou-fen YAN Ze-hong LIU Deng-cai ZHANG Lian-quan WEI Yu-ming ZHENG You-liang Triticeae Research Institute Sichuan Agricultural University Dujiangyan 611830 P.R.China

aluminum （Al） toxicity often takes place in acidic soils with a pH of 5.5 or lower. Breeding and cultivation of Al tolerance wheat can partially protect wheat escaping from Al toxicity. The scarcity of the tolerant sources impedes the wheat breeding. In order to find new Al tolerance sources, we screened 173 bread wheat landraces from Tibet of China using hydroponic screening. It was indicated that：（1） There were diversities on the root regenerate length （RRL）. The RRL of a large of landraces were longer than 7.00 cm in pH 7 （58.38%） and pH 4.5 （66.47%）, but shorter than 5.00 cm in pH 4.5 ＋50μM Al^3＋（80.93%）. The low pH showed either promotion or restraining effects depend on landraces, but Al toxicity under low pH only showed restraining effects on the root elongation. （2） There were also diversities on root tolerance index of low pH （RTI 1） or root aluminum tolerance index （RTI2） among cultivars. The RTI1 varied from a narrow range but with relatively high value （0.8722-1.2953） in comparison with that of RTI2 （0.3829-1.0058）, and the RTI1 of approximately 60% landraces was higher than 1.0000, the RTI2 of only 19.07% landraces was higher than 0.7000, suggesting that Al toxicity acted as an important factor for the reduction of the root elongation under acidic soils. （3） The RTI 1 of many wheats was higher than 1.0000, and As2256 and As2295 were the most tolerant for low pH, with RTI1 1.2953 and 1.2925, respectively. （4） Based on RTI2, seven wheats showed similar or higher tolerance to Al toxicity than Chinese Spring （CS）, a known tolerance wheat. Much better tolerance existed in landraces of As1543 and As1242, which can be used as the new parents for Al tolerant breeding.

关键词： bread wheat root regenerate length tolerance index aluminum tolerance hydroponic screening

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Identification and confirmation of novel QTLs for aluminum tolerance conferring tissue tolerance mechanism in soybean

Identification and confirmation of novel QTLs for aluminum t...

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江苏省遗传学会2019年学术研讨会

作者：李阳 Heng Ye Tri Vuong 李艳 Henry T.Nguyen National Key Laboratory of Crop Genetics and Germplasm Enhancement National Center for Soybean Improvement Nanjing Agricultural University Division of Plant Sciences University of Missouri

aluminum(Al) toxicity is a major abiotic stress limiting crop yield in acidic soil. Al toxicity inhibits plant root growth and development, leading to insufficient uptake of water and nutrient from soil. Soybean is sensitive to Al toxicity, exhibiting impaired root growth under elevated Al concentrations. In this research, two soybean lines(Magellan and PI 567731) were identified to differ in Al tolerance represented by primary root length ratio(PRLatio), total root length ratio(TRLatio), and root tip number ratio(RTNatio) under 25 μM Al3+. The recombinant inbred line(RIL) population derived from the cross of these two lines exhibited high inheritance(0.65 to 0.85) in Al tolerance-related traits. The quantitative trait loci(QTL) mapping identified three QTL on chromosome(Chr.) 3, 13 and 20 associated with Al tolerancerelated traits. qAlm20 explained the largest phenotypic variation of ～ 27.4% and mainly played roles in maintaining root elongation. qAlm03 and q Alm13 were mapped as novel Al tolerance loci and predicted to be mainly involved in maintaining root tip initiation or root elongation under Al stress, respectively. Furthermore, the two major QTL(qAlm13 and qALm20) were confirmed using nearisogenic lines(NILs), and they seemed to regulate Al tolerance in tissue tolerance pathway instead of Al3+ exclusion or transport. The tolerant allele of qALm20 was identified as a rare allele, which has not been widely utilized in soybean breeding. Our results not only provided novel genetic resources for breeding Al tolerant soybean varieties, but also confirmed Al tolerance QTL in the NIL background and proposed the possible mechanisms underlying them.

关键词： aluminum tolerance Near-isogenic lines QTL mapping Root length Soybean

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Mapping QTLs for aluminum tolerance in Introgression Lines of Wild Rice at Seedling Stage

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Agricultural Science & Technology 2014年第5期15卷 774-778,784页

作者：张晓晶张思远张辉张文会聊城大学生命科学学院山东聊城252059

In this study, wild rice chromosome segment substitution lines bred by Yuanjiang common wild rice and elite indica rice variety Teqing were used as ex-perimental materials to detect aluminum tolerancerelated QTLs based on the phe-notypic data of indoor and outdoor plant height inhibition rate and dry weight inhibi-tion rate at seedling stage. According to experimental results, 11, 18, 14 and 5 QTLs related with aluminum tolerance were detected respectively on different chro-mosomes. Analysis of phenotypic data of indoor and outdoor plant height inhibition rate indicated that QTLs around RM38 on chromosome 8 and RM277 chromosome 12 exhibited the highest contribution rates （12% and 11%）, belonging to major QTLs. Analysis of phenotypic data of indoor and outdoor dry weight inhibition rate indicated that the highest contribution rate was only 9% and 8%; therefore, no major QTL was detected. QTLs detected repeatedly were located on chromosomes 7, 8, 9, 11 and 12, respectively. Two QTLs were located on chromosome 8. QTLs around RM310 were detected three times and other QTLs were detected twice, which were identified as stable QTLs.

关键词： Wild rice Teqing Seedling stage aluminum tolerance QTL

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Comparative mapping of QTLs for Al tolerance in rice and identification of positional Al-induced genes

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Journal of Zhejiang University Science 2004年第6期5卷 634-643页

作者：毛传澡杨玲郑炳松吴运荣刘非燕易可可吴平 StateKeyLaboratoryofPlantPhysiologyandBiochemistry CollegeofLifeSciencesZhejiangUniversityHangzhou310029China

aluminum (Al) toxicity is the major factor limiting crop productivity in acid soils. In this study, a recombinant inbreed line (RIL) population derived from a cross between an Al sensitive lowland indica rice variety IR1552 and an Al tolerant upland japonica rice variety Azucena, was used for mapping quantitative trait loci (QTLs) for Al tolerance. Three QTLs for relative root length (RRL) were detected on chromosome 1, 9, 12, respectively, and 1 QTL for root length under Al stress is identical on chromosome 1 after one week and two weeks stress. Comparison of QTLs on chromosome 1 from different studies indicated an identical interval between C86 and RZ801 with gene(s) for Al tolerance. This interval provides an important start point for isolating genes responsible for Al tolerance and understanding the genetic nature of Al tolerance in rice. Four Al induced ESTs located in this interval were screened by reverse Northern analysis and confirmed by Northern analysis. They would be candidate genes for the QTL.

关键词： aluminum tolerance Quantitative trait loci (QTL) Expressed sequence tag (EST) Gene Rice (Oryza sativa L.)

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Nylon Filter Arrays Reveal Differential Expression of Expressed Sequence Tags in Wheat Roots Under aluminum Stress

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Journal of Integrative Plant Biology 2005年第7期47卷 839-848页

作者： KaiXIAO Gui-HuaBAI BrettFCARVER CollegeofAgronomy HebeiAgriculturalUniversityBaoding071001China／／USDA／ARSandDepartmentofAgronomyKansasStateUniversityManhattanKS66506USA USDA／ARSandDepartmentofAgronomy KansasStateUniversityManhattanKS66506USA DepartmentofPlantandSoilScience OklahomaStateUniversityStillwaterOK74078USA

: To enrich differentially expressed sequence tags (ESTs) for aluminum (Al) tolerance, cDNA subtraction libraries were generated from Al-stressed roots of two wheat (Triticum aestivum L.) near-isogenic lines (NILs) contrasting in Al-tolerance gene(s) from the Al-tolerant cultivar Atlas 66, using suppression subtractive hybridization (SSH). Expression patterns of the ESTs were investigated with nylon filter arrays containing 614 cDNA clones from the subtraction library. Gene expression profiles from macroarray analysis indicated that 25 ESTs were upregulated in the tolerant NIL in response to Al stress. The result from Northern analysis of selected upregulated ESTs was similar to that from macroarray analysis. These highly expressed ESTs showed high homology with genes involved in signal transduction, oxidative stress alleviation, membrane structure, Mg2+ transportation, and other functions. Under Al stress, the Al-tolerant NIL may possess altered structure or function of the cell wall, plasma membrane, and mitochondrion. The wheat response to Al stress may involve complicated defense-related signaling and metabolic pathways. The present experiment did not detect any induced or activated genes involved in the synthesis of malate and other organic acids in wheat under Al-stress.

关键词： aluminum tolerance differential gene expression near-isogenic lines suppression subtractive hybridization (SSH) wheat

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小黑麦的耐铝性与有机酸的分泌(英文)

小黑麦的耐铝性与有机酸的分泌(英文)

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“科技增强国力，青年开创未来——携手走向辉煌的新世纪”中国科协第三届青年学术年会

作者：章显光 Dan Alter Robin S.Jessop Frank Ellison Division of Agronomy & Soil Science University of New England Plant Breeding Institute-Narrabri The University of SydneyAustralia

试验选用三个耐铝性不同的小黑麦基因型及一个耐铝的小麦品系对根部有机酸的分泌作了研究。采用酶分析法检测了整个根系及根尖部分的苹果酸的释放;采用HPLC法测定了铝处理根部有机酸的分泌。酶分析法给出耐铝性与根尖苹果酸分泌间的某... 详细信息

试验选用三个耐铝性不同的小黑麦基因型及一个耐铝的小麦品系对根部有机酸的分泌作了研究。采用酶分析法检测了整个根系及根尖部分的苹果酸的释放;采用HPLC法测定了铝处理根部有机酸的分泌。酶分析法给出耐铝性与根尖苹果酸分泌间的某些关联性,然而耐铝小黑麦仅能释放出极少量的苹果酸。HPLC分析表明,苹果酸和柠檬酸并非与不同程度的耐铝性紧密相关的两种主要分泌物。供试基因型间在某一种有机酸的浓度上具显著差异,该种有机酸有待进一步鉴定识别。本研究的初步结果有驳于小麦耐铝性的一些假设机理,由此说明揭示并阐述小黑麦耐铝性的生化机理的重要性和必要性。

关键词： aluminum tolerance organic acids root apex triticale(×Triticosecale Wittmack)

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