Feiyu Yan^1,2, Xin Chen¹, Zhenzhen Wang¹, Yuxuan Xia¹, Dehui Zheng¹, Sirui Xue¹, Hongliang Zhao^1,2, Zhiwei Huang^1,2, Yuan Niu^1,2, Guoliang Zhang^1,2,*

Phyton-International Journal of Experimental Botany, Vol.93, No.7, pp. 1421-1440, 2024, DOI:10.32604/phyton.2024.053914 - 30 July 2024

Abstract Melatonin and abscisic acid, as major plant hormones, play important roles in the physiological and biochemical activities of crops, but the interaction between the two under salt stress is not yet clear. This study investigated the endogenous levels of melatonin and abscisic acid in rice by using exogenous melatonin, abscisic acid, and their synthetic inhibitors, and examined their interactions under salt stress. The research results indicate that melatonin and abscisic acid can improve rice salt tolerance. Melatonin alleviated the salt sensitivity caused by abscisic acid deficiency, increased antioxidant enzyme activity and antioxidant content in rice More >

Cong Hou¹, Kang Ning¹, Xiuye Wei¹, Yufei Cheng¹, Huatao Yu¹, Haibin Yu², Xia Liu^1,*, Linlin Dong^1,*

Phyton-International Journal of Experimental Botany, Vol.92, No.7, pp. 2087-2103, 2023, DOI:10.32604/phyton.2023.029041 - 29 May 2023

Abstract Abscisic acid (ABA) is involved in regulating diverse biological processes, but its signal transduction genes and roles in hemp seed germination are not well known. Here, the ABA signaling pathway members, PYL, PP2C and SnRK2 gene families, were identified from the hemp reference genome, including 7 CsPYL (pyrab-actin resistance1-like, ABA receptor), 8 CsPP2CA (group A protein phosphatase 2c), and 7 CsSnRK2 (sucrose nonfermenting1-related protein kinase 2). The content of ABA in hemp seeds in germination stage is lower than that in non-germination stage. Exogenous ABA (1 or 10 μM) treatment had a significant regulatory effect on the selected PYL,… More >

Ibrahim Hmmam^1,*, Ali Raza², Ivica Djalovic³, Nagwa Khedr¹, Abdou Abdellatif¹

Phyton-International Journal of Experimental Botany, Vol.92, No.6, pp. 1695-1711, 2023, DOI:10.32604/phyton.2023.028317 - 09 March 2023

Abstract Banana is a tropical crop cultivated in warm places. Chilling stress in Egypt is making banana crops less productive. Abscisic acid (ABA), a key plant hormone, regulates metabolic and physiological processes and protects plants from a variety of stresses. In vitro growing banana shoots were pre-treated with ABA at four concentrations (0, 25, 50, and 100 mM) and chilled at 5°C for 24 h, followed by a six-day recovery period at 25°C. By comparing ABA treatments to both positive and negative controls, physiological and biochemical changes were investigated. Chilling stress (5°C) caused a considerable increase… More >

Xiaojie Jing^1,2,3,#, Chunyan Li^1,2,3,#, Chengjuan Luo^1,2,3, Chaonan Yao^1,2,3, Jiahao Zhang^1,2,3, Tingting Zhu^1,2,3, Jiuguang Wang^1,2,3, Chaoxian Liu^1,2,3,*

Phyton-International Journal of Experimental Botany, Vol.92, No.3, pp. 707-723, 2023, DOI:10.32604/phyton.2023.024338 - 29 November 2022

Abstract The zinc finger homeodomain (ZF-HD) genes belong to the homeobox gene family, playing critical roles in flower development and stress response. Despite their importance, however, to date there has been no genome-wide identification and characterization of the ZF-HD genes that are probably involved in stress responses in maize. In this study, 24 ZF-HD genes were identified, and their chromosomal locations, protein properties, duplication patterns, structures, conserved motifs and expression patterns were investigated. The results revealed that the ZF-HD genes are unevenly distributed on nine chromosomes and that most of these genes lack introns. Six and… More >

Yang FW, XQ Feng

Phyton-International Journal of Experimental Botany, Vol.84, No.2, pp. 444-453, 2015, DOI:10.32604/phyton.2015.84.444

Abstract Abscisic acid (ABA) plays a series of significant physiology roles in higher plants including but not limited to promote bud and seed dormancy, accelerate foliage fall, induce stomatal closure, inhibit growth and enhance resistance. Recently, it has been revealed that ABA also has an important regulator role in the growth, development and ripening of fruit. In higher plants ABA is produced from an indirect pathway from the cleavage products of carotenoids. The accumulation of endogenous ABA levels in plants is a dynamic balance controlled by the processes of biosynthesis and catabolism, through the regulation of… More >

Wang XL^1,2, Z Zhao¹, JE Quan¹

Phyton-International Journal of Experimental Botany, Vol.80, pp. 93-100, 2011, DOI:10.32604/phyton.2011.80.093

Abstract Robinia pseudoacacia (locust hereafter) is an ornamental tree with various uses. Both homologous tetraploid (tetraploid hereafter) and diploid cultivars are commercially available. The tetraploids have advantageous traits, but poor germinability, and cuttings are difficult to root. Since auxin applications can promote rooting, we evaluated the effects of dipping cuttings in various indole-3-butyric acid (IBA) concentrations for four hours on rooting parameters. IBA significantly affected all measured parameters of both tetraploid and diploids cuttings. Tetraploid cuttings produced no roots without IBA. The effects were strongest at 1000 and 800 mg/L IBA for tetraploids and diploids, respectively. Values… More >