Syntrichia

Genotypic confirmation of a biased phenotypic sex ratio in a dryland moss using restriction fragment length polymorphisms

Premise: In dioicous mosses, sex is determined by a single U (female, โ™€) or V (male, โ™‚) chromosome. Although a 1 : 1 sex ratio is expected following meiosis, phenotypic sex ratios based on the production of gametangia are often female-biased. The โ€ฆ

Transcriptomic effects of acute ultraviolet radiation exposure on two ๐™Ž๐™ฎ๐™ฃ๐™ฉ๐™ง๐™ž๐™˜๐™๐™ž๐™– mosses

Ultraviolet radiation (UVR) is a major environmental stressor for terrestrial plants. Here we investigated genetic responses to acute broadband UVR exposure inthe highly desiccation-tolerant mosses *Syntrichia caninervis* and *Syntrichia ruralis*, โ€ฆ

Natural ultraviolet radiation exposure alters photosynthetic biology and improves recovery from desiccation in a desert moss

Plants in dryland ecosystems experience extreme daily and seasonal fluctuations in light, temperature, and water availability. We used an *in situ* field experiment to uncover the effects of natural and reduced levels of ultraviolet radiation (UV) on โ€ฆ

Wonders of a dryland moss

I co-led virtual workshop exploring the dimensions of biodiversity in the dryland moss genus Syntrichia.

To dry perchance to live: insights from the genome of the desiccation-tolerant biocrust moss ๐™Ž๐™ฎ๐™ฃ๐™ฉ๐™ง๐™ž๐™˜๐™๐™ž๐™– ๐™˜๐™–๐™ฃ๐™ž๐™ฃ๐™š๐™ง๐™ซ๐™ž๐™จ

With global climate change, water scarcity threatens whole agro/ecosystems. The desert moss Syntrichia caninervis, an extremophile, offers novel insights into surviving desiccation and heat. The sequenced Syntrichia caninervis genome consists of 13 โ€ฆ

Life under quartz: Hypolithic mosses in the Mojave Desert

Several species of dryland cyanobacteria are known to occur as hypoliths under semi-translucent rocks. In the Mojave Desert, these organisms find refuge from intense solar radiation under milky quartz where moisture persists for a longer period of โ€ฆ

Multiple factors influence population sex ratios in the Mojave Desert moss ๐™Ž๐™ฎ๐™ฃ๐™ฉ๐™ง๐™ž๐™˜๐™๐™ž๐™– ๐™˜๐™–๐™ฃ๐™ž๐™ฃ๐™š๐™ง๐™ซ๐™ž๐™จ

PREMISE OF RESEARCH: Natural populations of many mosses appear highly female-biased based on the presence of reproductive structures. This bias could be caused by increased male mortality, lower male growth rate, or a higher threshold for achieving โ€ฆ

Adaptation to extreme environments

Mosses and other biocrust organisms have evolved vegetative desiccation toleranceโ€”the ability to equilibrate to dry air, pausing all metabolic activity until rehydrationโ€”making them an excellent model system for studying adaptation to the desiccating and irradiating conditions of terrestrial life.

Desiccation and diversity in dryland mosses; The 3D Moss Project

An NSF Dimensions of Biodiversity Project; population genetics & phylogenetics of *Syntrichia*

Generation and maintenance of diversity of life history and sexual systems

Although a balanced sex ratio based on sex chromosomes is expected in spores after meiosis, S. caninervis is notable for its extremely strong sex ratio bias and low frequency of sexual reproduction.