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Expressed genes and their new alleles identification during fibre elongation reveal the genetic factors underlying improvements of fibre length in cotton
棉花 纤维伸长 表达基因簇
2024/4/16
本研究对亲本海7124、中棉所36及47个子代纤维发育5，10和15天的转录组数据分析，鉴定到35420个表达基因，构建了纤维伸长相关动态表达调控网络，其中10366个表达基因在子代中产生新等位基因（ENAs）；进一步鉴定到7个时空特异调控表达基因簇，差异表达分析筛选到105个候选基因，包含15个新等位基因。CRISPR-cas9系统敲除GhMAH1使纤维显著变短。本研究为解析陆海群体纤维长度变异...
GhAlaRP, a cotton alanine rich protein gene,involves in fiber elongation process
艾克曼棉 斯蒂芬氏棉 陆地棉野生种 基因组 结构变异
2024/4/16
本研究对艾克曼棉、斯蒂芬氏棉和一个陆地棉野生种系进行测序，解析了棉花多倍化及适应性进化过程中广泛存在的基因组结构变异，阐述了棉花生物多样性和棉花驯化的遗传基础；发现编码磷酸肽结合蛋白的基因结构变异可能与棉花纤维长度调控有关，烯酰辅酶Aδ异构酶3和RAP2-7可通过调节植物激素提高棉花非生物胁迫耐受性。研究结果揭示了棉花多倍化过程中的适应性进化机制，为棉花抗性和纤维品质遗传改良提供了宝贵的遗传材料。
南京农业大学农学院《Plant Physiology》发表郭旺珍教授团队“LIPID TRANSFER PROTEIN4 regulates cotton ceramide content and activates fiber cell elongation”（图）
郭旺珍 脂肪酸 棉纤维发育
2023/10/28
脂肪酸和脂质对植物细胞伸长具有重要作用，其功能特征涉及维持细胞结构完整性，为多种代谢过程提供能量，作为信号转导介质参与多种信号通路等。脂质转运蛋白(LTP)是一种含有疏水腔的蛋白质，这种结构特征使 LTP 蛋白能够结合和转运复杂的脂类物质。棉纤维是世界上最重要的天然纺织原料，也是植物中最长的单细胞。脂类物质的含量及组成对棉纤维发育具有重要调节作用，其中神经酰胺类脂质在棉纤维伸长时期含量最为丰富,且...
Genetic variation in MYB5_A12 is associated with fibre initiation and elongation in tetraploid cotton
MYB5_A12 陆地棉 纤维起始 纤维伸长 表达水平 海岛棉
2024/5/17
本研究发现MYB5_A12在陆地棉（SG747）纤维起始及伸长早期的表达水平显著低于海岛棉（GZ75）；通过QTL共定位分析发现，海岛棉GbMYB5_A12的等位基因型与纤维长度（FL）、纤维强度（FS）和衣分（LP）等性状显著正相关，其启动子区的顺式作用元件TFmatrixID_0063 (GATGTTGT)的自然变异可能导致海陆等位基因差异表达；通过酵母单杂及双荧光素酶报告基因实验验证了RAV...
Basal internode elongation of rice as affected by light intensity and leaf area
Internode elongation Leaf area index Light intensity Light quality R/FR
2023/4/21
Short basal internodes are important for lodging resistance of rice (Oryza sativa L.). Several canopy indices affect the elongation of basal internodes, but uncertainty as to the key factors determini...
The integration of ACS2-generated ACC with GH3-mediated IAA homeostasis in NaCl-stressed primary root elongation of Arabidopsis seedlings
ACS2 ACC IAAconjugation NaCl Rootgrowth
2024/3/5
Plant root growth is controlled by auxin (IAA) and ethylene. The appropriate IAA concentration is regulated by many events, such as IAA biosynthesis, conjugation, and degradation. The levels of ethyle...
Rapamycin Inhibits Expression of Elongation of Very-long-chain Fatty Acids 1 and Synthesis of Docosahexaenoic Acid in Bovine Mammary Epithelial Cells
Bovine Mammary Epithelial Cells Mammalian Target of Rapamycin Complex
2016/11/10
Mammalian target of rapamycin complex 1 (mTORC1) is a central regulator of cell growth and metabolism and is sufficient to induce specific metabolic processes, including de novo lipid biosynthesis. El...
Intraspecific Genetic Diversity in the Marine Shrimp Penaeus vannamei: Multiple Polymorphic Elongation Factor-1a Loci Revealed by Intron Sequencing
EPIC-PCR nuclear introns shrimp concerted evolution
2015/12/17
Intron sequences from the elongation factor-1a (EF1a) gene from the marine shrimp Penaeus
vannamei reveal extensive variation even among inbred populations of hatchery-raised shrimp. Among 44
indivi...
Aluminium-induced inhibition of root elongation in Arabidopsis is mediated by ethylene and auxin
Aluminium toxicity Arabidopsis thaliana auxin polar transport ethylene root elongation
2015/2/5
Aluminium (Al) is phytotoxic when solubilized into Al3+ in acidic soils. One of the earliest and distinct symptoms of Al3+ toxicity is inhibition of root elongation. To decipher the mechanism by which...
Aluminum-Induced Ethylene Production is Associated with Inhibition of Root Elongation in Lotus japonicus L.
Aluminum toxicity Ethylene production Lotus japonicus Medicago truncatula Root elongation
2015/2/5
Inhibition of root elongation by toxic aluminum (Al3+) occurs rapidly and is one of the most distinct and earliest symptoms of Al toxicity. To elucidate mechanism underlying Al3+-induced inhibition of...
Nitric Oxide is Involved in Nitrate-induced Inhibition of Root Elongation in Zea mays
Nitrate supply nitric oxide (NO) IAA root elongation maize Zea mays
2015/2/5
Background and Aims Root growth and development are closely dependent upon nitrate supply in the growth medium. To unravel the mechanism underlying dependence of root growth on nitrate, an examination...
Inhibition of nitric oxide synthase (NOS) underlies aluminum-induced inhibition of root elongation in Hibiscus moscheutos
aluminum (Al) toxicityHibiscus moscheutosnitric oxide (NO)nitric oxide synthase (NOS)root elongation
2015/2/5
Aluminum (Al) is toxic to plants when solubilized into Al3+ in acidic soils, and becomes a major factor limiting plant growth. However, the primary cause for Al toxicity remains unknown.Nitric oxide (...
The stability of T7 RNA polymerase elongation complexes and promoter function analysis by in vitro selection
Forward translocation model polymerase complex stability DNA structure
2014/12/11
The forward translocation model (paused or stalled polymerase moves forward in the absence of transcription, dissociation of the complex happens when hybrid is too short to stabilize the complex) is t...
Evaluation of kernel elongation ratio and aroma association in global popular aromatic rice cultivars in tropical environment
Aromatic rice kernel elongation ratio aroma kernel elongation ratio and aroma association
2011/1/11
Aroma and cooked kernel elongation are the most important quality traits of aromatic rice, which differentiate the highly valued aromatic rice from the other rice types. Previous studies on genetic an...
Efficient Transgene Expression in Chrysanthemum, Chrysanthemum morifolium Ramat.,with the Promoter of a Gene for Tobacco Elongation Factor 1 a Protein
Agrobacterium tissue culture transformation ornamental plants
2009/9/9
We investigated the usefulness of the promoter of a gene for tobacco elongation factor 1α protein (EF1 α) for transgene expression in the chrysanthemum (Chrysanthemum morifolium Ramat.). The EF1 α pro...