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Abstract Detail

Recent Topics Posters

Vasselli, Joseph [1], Kainer, Ellen [1], Hancock, Hope [1], Chappell, Tom [1], Shaw, Brian D.  [1].

The Conidial Coin Flip: One-Sided Adhesion in C. graminicola.

A critical factor in the success of fungal plant pathogens is conidial adhesion to host surfaces. Generating conidia capable of rapid and firm bonding to their host is not only important for keeping conidia from prematurely detaching from the host surface but can also serve as a trigger for spore germination and the development of infection structures. Investigation of the adhesion patterns of the maize pathogen Colletotrichum graminicola revealed that its macroconidia contain longitudinal actin cables that co-localize with a preformed strip of adhesive on the spore surface. Both the cables and the adhesive are localized to only one side of the spore. We hypothesize that this pattern enables approximately half of settling conidia to adhere instantly on contact with their host but leaves the remainder unadhered until they are disturbed to overturn them to the adherent face. We were able to associate this sidedness with adhesion and induce high conidial adhesion rates by disturbing conidia to flip them onto their adherent sides.

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1 - Texas A&M, Plant Pathology and Microbiology

Colletotrichum graminicola
Laser Scanning Confocal Microscopy

Presentation Type: Recent Topics Poster
Session: P1, Recent Topics Posters
Location: Virtual/Virtual
Date: Thursday, July 22nd, 2021
Time: 5:00 PM(EDT)
Number: P1RT015
Abstract ID:1405
Candidate for Awards:None

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