Geographic factors and climatic fluctuation drive the genetic structure and demographic history of (Cycadaceae), an endemic endangered species to Hainan Island in China.

Hainan Island had experienced several cold-warm and dry-humid fluctuations since the Late Pleistocene period, resulting in separating and connecting from the mainland several times with the cyclic rise and fall of sea level. The fluctuations can change the biota and ecological environment in the island. Carruthers is endemic to Hainan Island and is classified as endangered by the International Union for Conservation of Nature (IUCN).

Population Differentiation and Demographic History of the Complex (Cycadaceae) Endemic to South China as Indicated by DNA Sequences and Microsatellite Markers.

Historical geology, climatic oscillations, and seed dispersal capabilities are thought to influence the population dynamics and genetics of plants, especially for distribution-restricted and threatened species. Investigating the genetic resources within and among taxa is a prerequisite for conservation management. The complex consists of six endangered species that are endemic to South China.

Transcriptome analysis of two radiated species and the subsequent species delimitation of the complex.

Premise: is an important gymnosperm genus, and the most diverse of all cycad genera. The complex of species are morphologically similar and difficult to distinguish due to a lack of genomic resources.

Methods: We characterized the transcriptomes of two closely related and endangered species endemic to Hainan, China: and .

Functional Identification of Salt-Stress-Related Genes Using the FOX Hunting System from .

is a seashore halophytic plant and is therefore a good model for studying the molecular mechanisms underlying salt and stress tolerance in plant research. Here, we performed Full-length cDNA Over-eXpressor (FOX) gene hunting with a functional screening of a cDNA library using a salt-sensitive yeast mutant strain to isolate the salt-stress-related genes of ( genes). The library was screened for genes that complemented the salt defect of yeast mutant AXT3 and could grow in the presence of 75 mM NaCl.

Improves Salinity and Drought Tolerance in Transgenic and .

L. is an extremophile halophyte with strong adaptability to seawater and drought. It is widely used in the ecological restoration of coastal areas or degraded islands in tropical and subtropical regions.

[Effects of divergent habitat on genetic structure of population of Excoecaria agallocha, a mangrove associate].

Genetic diversity and population genetic structure of Excoecaria agallocha, a typical mangrove associate species,were surveyed at divergent habitats (intertidal and inland). In general, intertidal populations had higher genetic diversity than inland populations. Genetic differentiation among intertidal populations (G(ST) = 0.