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Are Histidine Kinases of Arbuscular Mycorrhizal Fungi Involved in the Response to Ethylene and Cytokinins?

Mol Plant Microbe Interact .. 2023-10; 
Ayla Mongès, Hajar Yaakoub, Baptiste Bidon, Gaëlle Glévarec, François Héricourt, Sabine Carpin, Lucie Chauderon, Lenka Drašarová, Lukáš Spíchal, Brad M Binder, Nicolas Papon, Soizic Rochange
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Gene Synthesis The full coding sequences of RiHHK6 and RiHHK7 (Hérivauxet al. 2017) were codon optimized and synthetized by Genscript. Each sequence was then cloned into the pYX212 linearized vector (NcoI-XhoI digested) to yield pYX212-RiHHK6 and pYX212-RiHHK7. Get A Quote


Signals are exchanged at all stages of the arbuscular mycorrhizal (AM) symbiosis between fungi and their host plants. Root-exuded strigolactones are well-known early symbiotic cues, but the role of other phytohormones as interkingdom signals has seldom been investigated. Here we focus on ethylene and cytokinins, for which candidate receptors have been identified in the genome of the AM fungus Rhizophagus irregularis. Ethylene is known from the literature to affect asymbiotic development of AM fungi, and in the present study, we found that three cytokinin forms could stimulate spore germination in R. irregularis. Heterologous complementation of a Saccharomyces cerevisiae mutant strain with the candidate ethylene... More


Rhizophagus; cytokinin; ethylene; mycorrhiza; receptor; symbiosis.