Mutations in nuclear genes encoding mitochondrial ribosome proteins restore pollen fertility in S male-sterile maize.

The interaction of plant mitochondrial and nuclear genetic systems is exemplified by mitochondria-encoded cytoplasmic male sterility (CMS) under the control of nuclear restorer-of-fertility genes. The S type of CMS in maize is characterized by a pollen collapse phenotype and a unique paradigm for fertility restoration in which numerous nuclear restorer-of-fertility lethal mutations rescue pollen function but condition homozygous-lethal seed phenotypes. Two nonallelic restorer mutations recovered from Mutator transposon-active lines were investigated to determine the mechanisms of pollen fertility restoration and seed lethality.

Role of Psychosocial Factors and Mental Well-Being for Baby WASH- and Nutrition-Related Behaviors in Lao PDR.

In Lao PDR, 30% of children under age 5 years are affected by stunting. Stunting in childhood is associated with poorer outcomes for both physical and cognitive development. Baby WASH is a focused approach to water supply, sanitation, and hygiene for infants and children that targets numerous contextual and psychosocial factors including child handwashing, food hygiene, clean play spaces, and management of animal feces in the household environment.

Frontal cortex neurometabolites and mobility in older adults: a preliminary study.

Background: The frontal cortex, relevant to global cognition and motor function, is recruited to compensate for mobility dysfunction in older adults. However, the in vivo neurophysiological (e.g.