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Craig Barrett

As seen in: BioRxiv
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Articles

Molecular and Taxonomic Reevaluation of the Digitaria filiformis Complex (Poaceae), Including a Globally Extinct, Single-Site Endemic from New Hampshire, USA, and a New Species from Mexico

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By William Nichols, Craig Barrett, Wesley Knapp, Jorge Gabriel Sánchez-Ken
| ingentaconnect.com
We examine the Digitaria filiformis complex to determine the proper taxonomic rank and conservation status of each member. The taxonomy of the D. filiformis complex is debated and includes two widespread taxa, D. filiformis var. filiformis and D. filiformis var. villosa; a rare taxon of southern Florida and the West Indies, D. filiformis var. dolichophylla; and a possibly extinct taxon that supposedly is a single-site endemic in New Hampshire, USA, D. filiformis var. laeviglumis.
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Plastid genome evolution in leafless members of the orchid subfamily Orchidoideae, with a focus on Degranvillea dermaptera

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By Craig Barrett
| BioRxiv
Abstract Premise: Leafless, heterotrophic plants are prime examples of organismal modification, the genomic consequences of which have received considerable interest. In particular, plastid genomes (plastomes) are being sequenced at a high rate, allowing continual refinement of conceptual models of reductive evolution in heterotrophs. Yet, numerous sampling gaps exist, hindering the ability to conduct comprehensive phylogenomic analyses in these plants.
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A case study of Whirly1 (WHY1) evolution in the angiosperms: altered sequence, splicing, and expression in a clade of early-transitional mycoheterotrophic orchids

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By Craig Barrett, Rachel M Muti, Brandon T. Sinn
| BioRxiv
New Results doi: https://doi.org/10.1101/2023.06.21.545690 Abstract The plastid-targeted transcription factor Whirly1 (WHY1) has been implicated in chloroplast biogenesis, plastid genome stability, and fungal defense response, which together represent characteristics of interest for the study of autotrophic losses across the angiosperms.
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