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[Effects of exogenous abscisic acid on grain filling characteristics, starch accumulation, and endogenous hormones in maize under early post-anthesis high temperature stress].
Ying Yong Sheng Tai Xue Bao
October 2024
College of Plant Protection, Shandong Agricultural University, Tai'an 271018, Shandong, China.
We investigated the effects of exogenous abscisic acid (ABA) on grain filling, starch accumulation, and endogenous hormones in maize (both the heat-tolerant maize variety Zhengdan 958 (ZD958) and the heat-sensitive variety Xianyu 335 (XY335)) under early post-anthesis high temperature stress by simulating high temperature stress for a period of 6 to 12 days post-anthesis in 2022 and 2023. There were three treatments: spraying water at ambient temperature as the control, spraying water at high temperature, and spraying ABA at high temperature. The results showed that early post-anthesis high temperature stress resulted in a significant reduction in grain weight and yield in maize, with XY335 showing a greater reduction than ZD958.
View Article and Find Full Text PDFThe mutation of ent-kaurenoic acid oxidase, a key enzyme involved in gibberellin biosynthesis, confers a dwarf phenotype to cucumber.
Theor Appl Genet
December 2024
State Key Laboratory of Crop Genetics and Germplasm Enhancement, College of Horticulture, Nanjing Agricultural University, Weigang Street No.1, Nanjing, 210095, China.
A dwarf mutant with short branches (csdf) was identified from EMS-induced mutagenesis. Bulked segregant analysis sequencing and map-based cloning revealed CsKAO encoding ent-kaurenoic acid oxidase as the causal gene. Plant architecture is the primary target of artificial selection during domestication and improvement based on the determinate function for fruit yield.
View Article and Find Full Text PDFIdentification of crucial drought-tolerant genes of barley through comparative transcriptomic analysis and yeast-based stress assay.
Front Genet
December 2024
College of Agronomy, Qingdao Agricultural University, Qingdao, China.
Drought is a persistent and serious threat to crop yield and quality. The identification and functional characterization of drought tolerance-related genes is thus vital for efforts to support the genetic improvement of drought-tolerant crops. Barley is highly adaptable and renowned for its robust stress resistance, making it an ideal subject for efforts to explore genes related to drought tolerance.
View Article and Find Full Text PDFSalicylic acid: The roles in plant immunity and crosstalk with other hormones.
J Integr Plant Biol
December 2024
The College of Life Sciences, Sichuan University, Chengdu, 610064, Sichuan, China.
Land plants use diverse hormones to coordinate their growth, development and responses against biotic and abiotic stresses. Salicylic acid (SA) is an essential hormone in plant immunity, with its levels and signaling tightly regulated to ensure a balanced immune output. Over the past three decades, molecular genetic analyses performed primarily in Arabidopsis have elucidated the biosynthesis and signal transduction pathways of key plant hormones, including abscisic acid, jasmonic acid, ethylene, auxin, cytokinin, brassinosteroids, and gibberellin.
View Article and Find Full Text PDFImpact of Hormone on Growth and GA Regulation of Anthocyanin Biosynthesis in Suspension-Culture Cells of Cyclocarya paliurus.
Biotechnol Bioeng
December 2024
Jiangxi Key Laboratory of Natural Products and Functional Foods, College of Food Science and Engineering, Jiangxi Agricultural University, Nanchang, China.
Hormones are effective in regulating plant metabolism and, therefore, are often used in plant cell culture to increase the yield of target products. This study investigated the effects of hormones on the growth and anthocyanin biosynthesis of suspension-cultured red Cyclocarya paliurus cells. Additionally, the mechanism by which gibberellin induces anthocyanin biosynthesis was explored through multi-omics integrated analysis and the assay of the dynamic changes in signaling molecule concentration.
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