Heterochronic developmental shifts underlie floral diversity within Jaltomata (Solanaceae).

ABSTRACT: BACKGROUND:Heterochronic shifts during mid- to late stages of organismal development have been proposed as key mechanisms generating phenotypic diversity. To determine whether late heterochronic shifts underlie derived floral morphologies within Jaltomata (Solanaceae)-a genus whose species have extensive and recently evolved floral diversity-we compared floral development of four diverse species (including an ambiguously ancestral or secondarily derived rotate, two putatively independently evolved campanulate, and a tubular morph) to the ancestral rotate floral form, as well as to an outgroup that shares this ancestral floral morphology. RESULTS:We determined that early floral development (< 1 mm bud diameter, corresponding to completion of organ whorl initiation) is very similar among all

SUBMITTER: Kostyun JL 

PROVIDER: S-EPMC5651583 | biostudies-literature | 2017

REPOSITORIES: biostudies-literature