scholarly journals Successional adaptive strategies revealed by correlating arbuscular mycorrhizal fungal abundance with host plant gene expression

2022 ◽  
Author(s):  
Cheng Gao ◽  
Pierre‐Emmanuel Courty ◽  
Nelle Varoquaux ◽  
Benjamin Cole ◽  
Liliam Montoya ◽  
...  
Keyword(s):  
Gene Expression ◽  
Host Plant ◽  
Arbuscular Mycorrhizal ◽  
Adaptive Strategies ◽  
Plant Gene Expression ◽  
Plant Gene ◽  
Fungal Abundance ◽  
Arbuscular Mycorrhizal Fungal

scholarly journals Successional adaptive strategies revealed by correlating arbuscular mycorrhizal fungal abundance with host plant gene expression

2021 ◽  
Author(s):  
Cheng Gao ◽  
Pierre-Emmanuel Courty ◽  
Nelle Varoquaux ◽  
Benjamin Cole ◽  
Liliam Montoya ◽  
...  
Keyword(s):  
Gene Expression ◽  
Drought Stress ◽  
Host Plant ◽  
Mycorrhizal Fungi ◽  
Arbuscular Mycorrhizal ◽  
Adaptive Strategies ◽  
Future Research ◽  
Differential Correlation ◽  
Fungal Abundance ◽  
Arbuscular Mycorrhizal Fungal

Arbuscular mycorrhizal fungi (AMF), the mutualistic symbionts with most crops, constitute a research system of human-associated fungi whose relative simplicity and synchrony are conducive to experimental ecology. However, little is known about the shifts in adaptive strategies of sorghum associated AMFs where strong AMF succession replaces initially ruderal species with competitive ones and where the strongest plant response to drought is to manage these AMF. First, we hypothesize that, when irrigation is stopped to mimic drought, competitive AMF species should be replaced by AMF species tolerant to drought stress. We then, for the first time, correlate AMF abundance and host plant transcription to test two novel hypotheses about the mechanisms behind the shift from ruderal to competitive AMF. Surprisingly, despite imposing drought stress, we found no stress tolerant AMF. Remarkably, we found strong and differential correlation between the successional shift from ruderal to competitive AMF and sorghum genes whose products (i) produce and release strigolactone signals, (ii) perceive mycorrhizal-lipochitinoligosaccharide (Myc-LCO) signals, (iii) provide plant lipid and sugar to AMF and, (iv) import minerals and water provided by AMF. These novel insights into host gene expression and succession of AMF show adaptive strategies evolved by AMF and their hosts and provide a rationale for selecting AMF to reduce inputs and maximize yield in commercial agriculture. Future research opportunities include testing the specifics and generality of our hypotheses by employing genetically modified host plants, and exploring additional genes underlying the adaptive strategies in natural succession.

scholarly journals Assessment of Local and Systemic Changes in Plant Gene Expression and Aphid Responses during Potato Interactions with Arbuscular Mycorrhizal Fungi and Potato Aphids

Plants ◽  
2020 ◽  
Vol 9 (1) ◽  
pp. 82
Author(s):  
Eric Rizzo ◽  
Tyler Sherman ◽  
Patricia Manosalva ◽  
S. Karen Gomez
Keyword(s):  
Gene Expression ◽  
Root Colonization ◽  
Arbuscular Mycorrhizal ◽  
Type I ◽  
Allene Oxide ◽  
Plant Gene Expression ◽  
Low Level ◽  
Plant Gene ◽  
Starting Point ◽  
Potato Aphids

This research examined aphid and plant responses to distinct levels (none, low, and high) of arbuscular mycorrhizal (AM) fungal root colonization by studying the association between potato aphids (Macrosiphum euphorbiae), potatoes (Solanum tuberosum), and AM fungi (Rhizophagus intraradices). It extends knowledge on gene expression changes, assessed by RT–qPCR, of ten defense-related genes at two time-points post-herbivory (24 h and 10 days), focusing on aphid-infested local leaves, non-infested systemic leaves, and roots. The results showed that aphid fitness was not altered by AM symbiosis. At 24 h, ETHYLENE RECEPTOR 1 gene expression was repressed in roots of aphid-infested non-mycorrhizal plants and aphid-infested plants with a high level of AM fungal root colonization, but not on aphid-infested plants with a low level of AM fungal root colonization. At 10 days, ALLENE OXIDE CYCLASE and POTATO TYPE I PROTEASE INHIBITOR were upregulated exclusively in local leaves of aphid-infested plants with a low level of AM fungal root colonization. In addition, local and systemic changes in plant gene expression appeared to be regulated exclusively by AM status and aphid herbivory. In summary, the gene expression data provide insights on mycorrhizal potato responses to aphid herbivory and serve as a starting point for future studies using this system.

Regulation of Plant Gene Expression by Auxins

1990 ◽  
pp. 401-418 ◽  
Author(s):  
Tom J. Guilfoyle ◽  
Bruce A. McClure ◽  
Christopher Brown ◽  
Melissa Gee ◽  
Antonio Franco ◽  
...  
Keyword(s):  
Gene Expression ◽  
Plant Gene Expression ◽  
Plant Gene

Analysis of plant gene expression during passion fruit-Xanthomonas axonopodisinteraction implicates lipoxygenase 2 in host defence

2015 ◽  
Vol 167 (1) ◽  
pp. 135-155 ◽  
Author(s):  
C.F. Munhoz ◽  
A.A. Santos ◽  
R.A. Arenhart ◽  
L. Santini ◽  
C.B. Monteiro-Vitorello ◽  
...  
Keyword(s):  
Gene Expression ◽  
Passion Fruit ◽  
Host Defence ◽  
Plant Gene Expression ◽  
Plant Gene

scholarly journals Fungal and plant gene expression in the Tulasnella calospora -Serapias vomeracea symbiosis provides clues about nitrogen pathways in orchid mycorrhizas

2016 ◽  
Vol 213 (1) ◽  
pp. 365-379 ◽  
Author(s):  
Valeria Fochi ◽  
Walter Chitarra ◽  
Annegret Kohler ◽  
Samuele Voyron ◽  
Vasanth R. Singan ◽  
...  
Keyword(s):  
Gene Expression ◽  
Plant Gene Expression ◽  
Plant Gene ◽  
Orchid Mycorrhizas ◽  
Tulasnella Calospora
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