Study on adventitious root induction and endogenous hormone dynamics during cutting propagation of Distylium chinense.

IF 4.2 2区生物学 Q2 BIOCHEMISTRY & MOLECULAR BIOLOGY

Plant Science Pub Date : 2025-02-18 DOI:10.1016/j.plantsci.2025.112430

Yating Huang, Kaili Huang, Minhuan Zhang, Wenxuan Bu, Xingyu Yang, Jianing Tian, Yu Huang

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引用次数: 0

Abstract

Distylium chinense has strong ecological adaptability and high ornamental value, which should have broad application prospects in urban landscaping. However, its low cutting rooting rate and slow rooting speed, as well as limited varietal numbers, have hindered its promotion and application in landscape. This study aims to reveal the development characteristics of adventitious roots (AR) and the regulation mechanism of endogenous hormones during the cutting propagation. Through cutting propagation and paraffin section technology, combined with immunohistochemical localization and hormone quantitative analysis, the morphogenesis of cuttings and the dynamic changes of endogenous hormones were comprehensively analyzed. The study found that the development of AR experienced three stages: induction period, expression period and elongation period, and the root primordium originated from vascular cambium, phloem, cortex and callus. Indoleacetic acid (IAA) and abscisic acid (ABA) signals accumulated in different tissues with the development of AR. IAA content showed a trend of ' decrease-increase ', zeatin riboside (ZR) and gibberellin (GA₃) content showed a trend of ' decrease-increase-decrease ', while ABA content showed a trend of ' increase-decrease-increase ' in the treatment group, which was compared with the ' decrease-increase ' trend of the control group. These results not only indicate that the development process of AR is closely related to the temporal and spatial changes of endogenous hormones, but also provide a new theoretical basis for the cultivation of new varieties and industrial production of D. chinense.

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来源期刊

Plant Science 生物-生化与分子生物学

CiteScore

9.10

自引率

1.90%

发文量

322

审稿时长

33 days

期刊介绍： Plant Science will publish in the minimum of time, research manuscripts as well as commissioned reviews and commentaries recommended by its referees in all areas of experimental plant biology with emphasis in the broad areas of genomics, proteomics, biochemistry (including enzymology), physiology, cell biology, development, genetics, functional plant breeding, systems biology and the interaction of plants with the environment. Manuscripts for full consideration should be written concisely and essentially as a final report. The main criterion for publication is that the manuscript must contain original and significant insights that lead to a better understanding of fundamental plant biology. Papers centering on plant cell culture should be of interest to a wide audience and methods employed result in a substantial improvement over existing established techniques and approaches. Methods papers are welcome only when the technique(s) described is novel or provides a major advancement of established protocols.