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| 1 | 植物营养元素运输载体的功能及其调控机制研究进展显示文摘植物营养必需元素包括氮(N)、磷(P)、钾(K)和锌(Zn)等,它们参与调控植物许多生理、生化过程,是直接影响作物产量和品质的关键因子,但其过度积累也会对植物细胞或个体造成毒害。因此,这些营养元素的吸收和转运过程在细胞水平上必须被严格调控。本文以模式植物拟南芥和水稻为对象,简要总结了高等植物中这些元素转运蛋白的类型及理化性质,阐述了其生物学功能及其作用机制,如N转运蛋白家族(NPF、NRT2、CLC、SLAC/SLAH和AMTs)、P转运蛋白家族(PHT1、PHT2、PHT3、PHT4和PHT5)、K转运蛋白家族(KT/HAK/KUP、HKT、CHX和KEA)和Zn转运蛋白家族(ZIP、CDF和P1_B型ATP酶)。由于细胞质膜内吞是胞外物质吸收、质膜受体或转运蛋白丰度调控的重要途径,因此,本文还分析了转运蛋白内吞调控在植物细胞营养元素吸收与转运中的功能。最后,对未来转运蛋白的功能及其调控机制研究进行了展望,为作物养分高效利用和品质遗传改良提供新的研究思路和策略。 | 陈迪 潘伟槐 周哉材 严旭 潘建伟 | 2018 | 浙江大学学报(农业与生命科学版)2018，44，3： | 12 |
| 2 | Dominant early heading without yield drag in a sister-line BC breeding progeny DEH_229 is controlled by multiple genetic factors with maineffect loci显示文摘Dominant early heading(DEH)in rice(Oryza sativa L.)is of interest in both breeding and genetics.The genetic mechanisms underlying DEH have remained largely unclear.We have developed a near-isogenic DEH line without yield drag named DEH_229 by sister-line backcross(BC)breeding with MH63,a restorer,as the genetic background.We conducted a pilot genetic investigation under both short-day(SD)and long-day(LD)conditions.The DEH line harbored only 1.06%variation in the genome sequence relative to MH63.The variants were distributed throughout the genome.Using QTL mapping by sequencing(QTL-seq)on an F_(2) population derived from a cross of MH63×DEH_229,57 loci were detected under the SD condition.Joint mapping employing a genome-wide association study with accessions from the 3000 rice genome sequencing project(3K-RG),reduced the number of QTL by 43.9%.Using Rice Functional Genomics&Breeding(RFGB)database,the number of SNP cluster regions within the QTL regions reduced by 27.3%.Further comparison of the genome variation between DEH_229 and MH63 in addition to gene annotation information revealed a new DEH allele of DTH3 with multiple variable sites as a possible major factor underlying the early-heading phenotype of DEH_229.An InDel marker,ZMEH_1,was designed based on the variation between DEH_229 and MH63 within this region.It accounted for 86.0%of heading date variation under both SD and LD conditions in 109 randomly chosen progeny derived from extreme lines of the MH63×DEH_229 population.This study reveals the genetic complexity of DEH in the near-isogenic line and may provide useful material and marker information for plant molecular breeding. | Muhiuddin Faruquee Qiang Zhang Lubiao Zhang Linyun Xu Wensheng Wang Jiansan Chen Jianlong Xu Zhikang Li Binying Fu Tianqing Zheng | 2021 | The Crop Journal2021，9，2： | 0 |
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