Jul 2026· Journal of Experimental Botany· 1 citation
Medicine
TL;DR
This review examines the shaping of ABA metabolism, signaling, and downstream responses through the lens of gene family evolution and transcriptional regulation and highlights the fundamental conservation and divergence of ABA-mediated responses in plant evolution.
Abstract
Life has undergone profound transformations since its origin approximately 3.5 billion years ago. These evolutionary milestones, most notably terrestrialization, have left indelible marks on all extant land plants. A prime example is the sesquiterpenoid compound abscisic acid (ABA), which transitioned from a metabolic byproduct into a major phytohormone orchestrating stress responses and development in the green lineage. In this review, we examine the shaping of ABA metabolism, signaling, and downstream responses through the lens of gene family evolution and transcriptional regulation. By exploring the integration of ABA with core cellular and metabolic processes and comparing seed-free lineages and spermatophytes, we highlight the fundamental conservation and divergence of ABA-mediated responses in plant evolution.
Horizontal gene transfer (HGT) has been considered as a pivotal source of genetic innovation during early plant evolution. This review synthesizes evidence that genes acquired from microbes (e.g., bacteria and fungi) by plants facilitated critical adaptations in their terrestrialization. These include stress tolerance,...
Jian-Chao Ma, S. Dong, Yun Zhou et al.· Plant Physiology· 0 citations
Insect herbivores have driven plants to evolve complex chemical defenses, including mimics of the arthropod molting hormone 20-hydroxyecdysone (20E). Many distantly related plants produce 20E, suggesting multiple, independent evolutionary origins. However, despite the prevalence of 20E in arthropods and plants, complet...
Josh Park, Juan A. Orozco, Galen J. L. Tiong et al.· bioRxiv· 0 citations
How the functional innovations that enabled plants to first colonize land 450 million years ago evolved remains puzzling. Here, we show that the gain of a single family of enzymes was pivotal in the evolution of two of these innovations, the cuticle that protect plants from dehydration and UV light, and the Arbuscular...
Duchesse-Lacours Mbadinga Zamar, Philippe Ranocha, M. Rich et al.· bioRxiv· 0 citations
Expansins are fundamental agents of plant growth and adaptation, enabling cell walls to expand and remodel through unique non-enzymatic mechanisms. This review elucidates the structural biology, evolutionary history, and physiological versatility of these essential proteins. Characterised by a conserved two-domain arch...
Jiawei Pan, Rahat Sharif, Caochuang Fang et al.· Plant, Cell and Environment· 0 citations
The evolution of indoleacetic acid (IAA) into the plant hormone auxin remains unclear. Here, we compared IAA response and metabolism in land plants and their closest living relatives, the streptophyte algae, using chemical treatments, phytohormone profiling, and targeted and untargeted metabolomics. Streptophyte algae...
Roman Skokan, Vojtěch Schmidt, P. Dobrev et al.· bioRxiv· 0 citations
We use cookies to run the site and, with your consent, for analytics and to show ads.
See our Cookie Policy.
