|Table of Contents|

Mechanism of EM Bacteria Group on Lettuce Growth Under Drought Conditions

《北方园艺》[ISSN:1001-0009/CN:23-1247/S]

Issue:
2026年4
Page:
17-26
Research Field:
Publishing date:

Info

Title:
Mechanism of EM Bacteria Group on Lettuce Growth Under Drought Conditions
Author(s):
SUN Tao; LIU Yaning; GAO Xiaona; ZHAO Jiqiang
(School of Life Sciences，Yantai University，Yantai,Shandong 264006)
Keywords:
EM bacterial fertilizer; metagenome; PEG stress; photochemical efficiency; microbial community
PACS:
S636.2
DOI:
10.11937/bfyy.20252921
Abstract:
Taking Italian lettuce as the test material，the methods of simulating drought stress with 20%PEG 6000 and applying EM bacterial fertilizer were adopted.The effects of microbial communities of six types of EM bacterial fertilizers (metagenomic sequencing showed that EM1 dominated by Proteobacteria at 73.62%-76.87%，Ascomycota at 93.7%-97.8%，and core functional genera Acidomyces at 36.21%-38.40% and Trichoderma at 43.1%-58.1%) on the drought resistance of lettuce were studied to screen EM bacterial fertilizer that effectively enhances the stress resistance of plants,in order to provide references for its application in agricultural production.The results showed that after continuous PEG stress and application of different EM bacterial fertilizers，the chlorophyll content，superoxide dismutase (SOD)，peroxidase (POD)，catalase (CAT)，maximum photochemical efficiency value (Fv/Fm)，actual photochemical efficiency (Y（Ⅱ）)，and electron transfer rate (ETR) of lettuce leaves.The physiological indicators such as root length and root thickness were significantly improved compared with those without the application of EM bacterial fertilizer in photography.

References:

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Last Update: 2026-03-12