Inhospitable: early signalling events during cereal symbiosis

Add to your list(s) Download to your calendar using vCal

• Enrico Gobbato (Paszkowski Lab)
• Thursday 15 January 2015, 13:00-13:30
• Department of Plant Sciences, Large Lecture Theatre.

If you have a question about this talk, please contact Stephanie Swarbreck.

Symbiosis with arbuscular mycorrhizal (AM) fungi of the Glomeromycota phylum is very ancient and widespread in the plant kingdom. Its establishment is mediated through a molecular dialogue involving release and perception of multiple signals from both symbionts. Its earliest stages while being the most critical are also the least well understood. Mutational analyses led to identification of multiple genes essential for mycorrhizal colonization, including the so called Sym genes also required in nodulation, but to date the mutation of none of them results in the suppression of all plant responses to AM fungi. Here we describe the rice iho mutant, which is completely unresponsive to AM fungi as monitored microscopically and by early marker genes expression. Normal susceptibility and gene induction in response to both pathogenic and endophytic fungi shows the specific contribution of IHO to AM fungal perception. Genetic complementation experiments demonstrated that the IHO gene encodes for an alpha-beta hydrolase, which also mediates developmental responses in rice. The previous identification of multiple alpha beta hydrolases as receptors (e.g. GID1 and SABP3 ) makes IHO a very strong candidate receptor of AM signals while its redundancy in legume genomes but not in rice explains the failure in its identification in previous screenings. Global gene profiling experiments in response to developmental and AM fungal signals define the signaling events mediated by IHO and generate novel information on the earliest molecular events of AM symbiosis.

This talk is part of the Plant Sciences Departmental Seminars series.

This talk is included in these lists:

• All Talks (aka the CURE list)
• Biology
• Biology
• CambPlants Hub
• Cambridge Global Food Security
• Cambridge Global Food Security
• Department of Plant Sciences, Large Lecture Theatre
• Interesting talks- 1st try
• Life Sciences
• Life Sciences
• ME Seminar
• Plant Sciences Departmental Seminars
• Reception - Plant Sciences
• ji247's list
• my_list
• other talks

Note that ex-directory lists are not shown.