Contrasting patterns of variation in weedy traits and unique crop features in divergent populations of US weedy rice (Oryza sativa sp.) in Arkansas and California.

Background: Weed evolution from crops involves changes in key traits, but it is unclear how genetic and phenotypic variation contribute to weed diversification and productivity. Weedy rice is a conspecific weed of rice (Oryza sativa) worldwide. We used principal component analysis and hierarchical clustering to understand how morphologically and evolutionarily distinct US weedy rice populations persist in rice fields in different locations under contrasting management regimes.

Escape to Ferality: The Endoferal Origin of Weedy Rice from Crop Rice through De-Domestication.

Domestication is the hallmark of evolution and civilization and harnesses biodiversity through selection for specific traits. In regions where domesticated lines are grown near wild relatives, congeneric sources of aggressive weedy genotypes cause major economic losses. Thus, the origins of weedy genotypes where no congeneric species occur raise questions regarding management effectiveness and evolutionary mechanisms responsible for weedy population success.

Understanding Latino Parents' Child Mental Health Literacy: Todos a bordo/All Aboard.

Objective: This article describes Phase 1 of a pilot that aims to develop, implement, and test an intervention to educate and simultaneously engage highly stressed Latino parents in child mental health services. A team of Spanish-speaking academic and community co-investigators developed the intervention using a community-based participatory research approach and qualitative methods.

Method: Through focus groups, the team identified parents' knowledge gaps and their health communication preferences.

Mechanism of resistance to penoxsulam in late watergrass [ Echinochloa phyllopogon (Stapf) Koss.].

Late watergrass [ Echinochloa phyllopogon (Stapf.) Koss.] is a major weed of California rice that has evolved P450-mediated metabolic resistance to multiple herbicides.