scholarly journals Three tandemly aligned LEA genes from Medicago truncatula confer differential protection to Escherichia coli against abiotic stresses

2020 ◽  
Vol 64 ◽  
pp. 95-112
Author(s):  
Y.-M. ZHANG ◽  
H.-Q. WANG ◽  
D.-M. LIU ◽  
R.-J. LIU
Keyword(s):  
Escherichia Coli ◽  
Medicago Truncatula ◽  
Abiotic Stresses ◽  
Differential Protection ◽  
Lea Genes

scholarly journals Bacterial Compound N,N-Dimethylhexadecylamine Modulates Expression of Iron Deficiency and Defense Response Genes in Medicago truncatula Independently of the Jasmonic Acid Pathway

Plants ◽  
2020 ◽  
Vol 9 (5) ◽  
pp. 624 ◽  
Author(s):  
Vicente Montejano-Ramírez ◽  
Ernesto García-Pineda ◽  
Eduardo Valencia-Cantero
Keyword(s):  
Gene Expression ◽  
Salicylic Acid ◽  
Iron Deficiency ◽  
Jasmonic Acid ◽  
Pseudomonas Syringae ◽  
Medicago Truncatula ◽  
Abiotic Stresses ◽  
Biotic And Abiotic Stresses ◽  
Iron Deprivation ◽  
Iron Deficient

Plants face a variety of biotic and abiotic stresses including attack by microbial phytopathogens and nutrient deficiencies. Some bacterial volatile organic compounds (VOCs) activate defense and iron-deficiency responses in plants. To establish a relationship between defense and iron deficiency through VOCs, we identified key genes in the defense and iron-deprivation responses of the legume model Medicago truncatula and evaluated the effect of the rhizobacterial VOC N,N-dimethylhexadecylamine (DMHDA) on the gene expression in these pathways by RT-qPCR. DMHDA increased M. truncatula growth 1.5-fold under both iron-sufficient and iron-deficient conditions compared with untreated plants, whereas salicylic acid and jasmonic acid decreased growth. Iron-deficiency induced iron uptake and defense gene expression. Moreover, the effect was greater in combination with DMHDA. Salicylic acid, Pseudomonas syringae, jasmonic acid, and Botrytis cinerea had inhibitory effects on growth and iron response gene expression but activated defense genes. Taken together, our results showed that the VOC DMHDA activates defense and iron-deprivation pathways while inducing a growth promoting effect unlike conventional phytohormones, highlighting that DMHDA does not mimic jasmonic acid but induces an alternative pathway. This is a novel aspect in the complex interactions between biotic and abiotic stresses.

alr0882 encoding a hypothetical protein of Anabaena PCC7120 protects Escherichia coli from nutrient starvation and abiotic stresses

Gene ◽  
2012 ◽  
Vol 511 (2) ◽  
pp. 248-255 ◽  
Author(s):  
Alok Kumar Shrivastava ◽  
Sarita Pandey ◽  
Prashant Kumar Singh ◽  
Snigdha Rai ◽  
Lal Chand Rai
Keyword(s):  
Escherichia Coli ◽  
Abiotic Stresses ◽  
Hypothetical Protein ◽  
Nutrient Starvation ◽  
Anabaena Pcc7120

Identification of the trehalose-6-phosphate synthase gene family in Medicago truncatula and expression analysis under abiotic stresses

Gene ◽  
2021 ◽  
Vol 787 ◽  
pp. 145641
Author(s):  
Jianbo Song ◽  
Hanyi Mao ◽  
Jie Cheng ◽  
Yong Zhou ◽  
Rongrong Chen ◽  
...  
Keyword(s):  
Gene Family ◽  
Medicago Truncatula ◽  
Expression Analysis ◽  
Abiotic Stresses ◽  
Phosphate Synthase

scholarly journals Genome-Wide Identification and Expression Profiling Analysis of the Trihelix Gene Family Under Abiotic Stresses in Medicago truncatula

Genes ◽  
2020 ◽  
Vol 11 (11) ◽  
pp. 1389
Author(s):  
Xiqiang Liu ◽  
Han Zhang ◽  
Lin Ma ◽  
Zan Wang ◽  
Kun Wang
Keyword(s):  
Medicago Truncatula ◽  
Abiotic Stresses ◽  
Growth And Development ◽  
Chromosomal Distribution ◽  
Specific Expression ◽  
Genome Wide ◽  
Duplication Events ◽  
Gene Structures ◽  
Syntenic Analysis ◽  
Profiling Analysis

The trihelix transcription factor (GT) family is widely involved in regulating plant growth and development, and most importantly, responding to various abiotic stresses. Our study first reported the genome-wide identification and analysis of GT family genes in Medicago truncatula. Overall, 38 trihelix genes were identified in the M. truncatula genome and were classified into five subfamilies (GT-1, GT-2, SH4, GTγ and SIP1). We systematically analyzed the phylogenetic relationship, chromosomal distribution, tandem and segmental duplication events, gene structures and conserved motifs of MtGTs. Syntenic analysis revealed that trihelix family genes in M. truncatula had the most collinearity relationship with those in soybean followed by alfalfa, but very little collinearity with those in the maize and rice. Additionally, tissue-specific expression analysis of trihelix family genes suggested that they played various roles in the growth and development of specific tissues in M. truncatula. Moreover, the expression of some MtGT genes, such as MtGT19, MtGT20, MtGT22, and MtGT33, was dramatically induced by drought, salt, and ABA treatments, illustrating their vital roles in response to abiotic stresses. These findings are helpful for improving the comprehensive understanding of trihelix family; additionally, the study provides candidate genes for achieving the genetic improvement of stress resistance in legumes.

Sign in / Sign up

Export Citation Format

Share Document