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Abstract Detail

Development and Structure

Schlenk, Noelle [1], Katzer, Amanda [1], Hileman, Lena [1].

Is CRABS CLAW gene expression associated with nectary development in Penstemon?

The ability of flowering plants to produce a nectar reward for visiting pollinators plays a critical role in reproductive success. Several gene families have been shown to regulate the development of nectaries within nectar-producing flowers, such as C-class genes (in Arabidopsis and Petunia), STYLISH (in Aquilegia), and CRABS CLAW (in Arabidopsis). In the genus Penstemon, floral nectaries are uniquely positioned at the base of anther filaments. This unique positioning raises the question of whether genes previously identified to function in nectary initiation contribute to nectary development in Penstemon. To address this question, we focused our research on CRABS CLAW in Penstemon. We leveraged genomic resources in Penstemon barbatus to identify putative  CRABS CLAW orthologs. We carried out a phylogenetic analysis that included both putative Penstemon orthologs and multiple CRABS CLAW homologs from the YABBY gene family. We identified a single CRABS CLAW ortholog in Penstemon barbatus. We are currently using an RT-PCR approach to test the hypothesis that CRABS CLAW is uniquely expressed in the nectary-producing stamen filaments of Penstemon barbatus, but not in the nectary-free stamen filaments.

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1 - University of Kansas, Ecology & Evolutionary Biology, 1200 Sunnyside Ave, Lawrence, KS, 66045, USA

nectary development.

Presentation Type: Poster
Session: P1, Development and Structure Posters
Location: Virtual/Virtual
Date: Monday, July 19th, 2021
Time: 5:00 PM(EDT)
Number: P1DS003
Abstract ID:355
Candidate for Awards:Developmental and Structural Section best poster,Developmental and Structural Section Undergraduate Student Registration Award

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