Chinese Jujube witches' broom phytoplasmas inhibit ZjBRC1-mediated abscisic acid metabolism to induce shoot proliferation

Published 2024년 1월 24일

Tridge summary

A recent study in Horticulture Research has provided insights into the pathogenesis of Jujube witches' broom (JWB) disease, a condition that affects the Chinese jujube plant. The research identified over 12,000 unique genes that showed different expressions in healthy and infected buds, with significant changes noted in genes related to growth and shoot system development. The study also discovered that JWB phytoplasma manipulates hormone pathways, especially the ABA pathway, via ZjBRC1 to stimulate lateral bud outgrowth. This knowledge could aid in creating JWB-resistant jujube varieties.

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Original content

Chinese jujube (Ziziphus jujuba Mill.), an important species in the Rhamnaceae family, has been cultivated in China for over 7,000 years and is vulnerable to Jujube witches' broom (JWB) disease. This disease, caused by the JWB plant pathogen, leads to overgrowth of axillary buds, affecting plant health and yield.Previous studies identified two JWB effectors, SJP1 and SJP2, which disrupt ZjBRC1-mediated auxin flux, inducing lateral bud outgrowth. Despite these discoveries, the complete pathogenesis of JWB remains largely unknown. Understanding the interactions between jujube plants and JWB phytoplasmas, particularly the role of secreted proteins in affecting plant growth regulators, is crucial.In July 2023, Horticulture Research published a research article titled "Haplotype analyses reveal novel insights into tomato history and domestication driven by long-distance migrations and latitudinal adaptations."In this study, tissue-specific transcriptional reprogramming was employed to ...

Source: Phys