AI Article Synopsis

  • Abscisic acid (ABA) is crucial for plant growth and stress response, but its buildup in soil can harm seed germination and root growth.
  • A newly identified strain, sp. P1Y, can use ABA as its sole carbon source and lowers ABA levels in plant roots.
  • Researchers isolated and identified an intermediate product of ABA degradation by this bacterium, determining its chemical structure and concluding the degradation process gradually shortens the acyl part of the ABA molecule.

Article Abstract

The phytohormone abscisic acid (ABA) plays an important role in plant growth and in response to abiotic stress factors. At the same time, its accumulation in soil can negatively affect seed germination, inhibit root growth and increase plant sensitivity to pathogens. ABA is an inert compound resistant to spontaneous hydrolysis and its biological transformation is scarcely understood. Recently, the strain sp. P1Y was described as a rhizosphere bacterium assimilating ABA as a sole carbon source in batch culture and affecting ABA concentrations in plant roots. In this work, the intermediate product of ABA decomposition by this bacterium was isolated and purified by preparative HPLC techniques. Proof that this compound belongs to ABA derivatives was carried out by measuring the molar radioactivity of the conversion products of this phytohormone labeled with tritium. The chemical structure of this compound was determined by instrumental techniques including high-resolution mass spectrometry, NMR spectrometry, FTIR and UV spectroscopies. As a result, the metabolite was identified as ()-4-hydroxy-3,5,5-trimethyl-4-[()-3-oxobut-1-enyl]cyclohex-2-en-1-one (dehydrovomifoliol). Based on the data obtained, it was concluded that the pathway of bacterial degradation and assimilation of ABA begins with a gradual shortening of the acyl part of the molecule.

Download full-text PDF

Source
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7996341PMC
http://dx.doi.org/10.3390/biom11030345DOI Listing

Publication Analysis

Top Keywords

rhizosphere bacterium
8
abscisic acid
8
aba
7
bacterium p1y
4
p1y metabolizes
4
metabolizes abscisic
4
acid form
4
form dehydrovomifoliol
4
dehydrovomifoliol phytohormone
4
phytohormone abscisic
4

Similar Publications

Understanding the influence of plant genetic factors on rhizosphere microbiome assembly in .

Front Microbiol

December 2024

State Key Laboratory for Quality Ensurance and Sustainable Use of Dao-di Herbs, Institute of Chinese Materia Medica, China Academy of Chinese Medical Sciences, Beijing, China.

Introduction: Functional rhizosphere microbiomes (FRM) are critical for plant health and yield. However, the ecological succession of FRM and their links to plant genetic factors across the life cycle of perennial plants remain poorly understood.

Methods: This study profiled FRM, including plant-beneficial bacteria (PBB) and fungal plant pathogens (FPP), across different developmental stages of .

View Article and Find Full Text PDF

Effects of saffron-grape intercropping on saffron flower number and rhizosphere microbial community.

BMC Microbiol

December 2024

TCM (Traditional Chinese Medicine), Huzhou Central Hospital, Key Laboratory Cultivation Base of Zhejiang Province for the Development and Clinical Transformation of Immunomodulatory Drugs, Fifth School of Clinical Medicine of Zhejiang Chinese Medical University, Huzhou, Zhejiang, China.

Background: Saffron (Crocus sativus L.) is a valuable herb. With the increasing demand for saffron, people are starting to focus on how to increase its yields.

View Article and Find Full Text PDF

Background: Actinobacteria are major producers of antibacterial and antifungal metabolites and are growing their search for substances of biotechnological interest, especially for use in agriculture, among other applications. The Amazon is potentially rich in actinobacteria; however, almost no research studies exist. Thus, we present a study of the occurrence and antifungal potential of actinobacteria from the rhizosphere of , a native South American plant and one that is economically useful in the whole of the Amazon.

View Article and Find Full Text PDF

Rhizosphere microorganisms are important factors affecting herb quality and secondary metabolite accumulation. In this study, we investigated the diversity of rhizosphere microbial communities (bacteria and fungi) and their correlations with soil physicochemical properties and active compounds of (baicalin, oroxindin, baicalein, wogonin, and oroxylin A) from cultivated with three different origins high-throughput sequencing and correlation analysis to further clarify the role of soil factors in the accumulation of the active compounds of . The results are summarized as follows.

View Article and Find Full Text PDF

Diversity and functional traits based indigenous rhizosphere associated phosphate solubilizing bacteria for sustainable production of rice.

Front Microbiol

December 2024

Division of Soil and Environmental Biotechnology, National Institute for Biotechnology and Genetic Engineering College (NIBGE-C), Pakistan Institute of Engineering and Applied Sciences (PIEAS), Faisalabad, Pakistan.

Introduction: Rice, particularly Basmati rice, holds significant global importance as a staple food. The indiscriminate use of phosphate-based fertilizers during rice production has led to high residual levels of these chemicals in soil, impacting soil health and fertility. This study aimed to address this challenge by investigating the potential of phosphate solubilizing bacteria (PSB) in improving soil fertility and boosting the growth of Basmati rice.

View Article and Find Full Text PDF

Want AI Summaries of new PubMed Abstracts delivered to your In-box?

Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!