The pan-plastome of : insights into diversity, phylogeny, and domestication history.

Backgrounds: in the Rosaceae and commonly referred to as mei or Chinese plum is widely used as a traditional ornamental flowering plant and fruit tree in China. Although some population and genetic analyses have been conducted for this species, no extensive comparisons of genetic variation from plastomes have yet been investigated.

Methods: We assembled a total of 322 complete plastomes in this study and did a series of comparative analyses to better resolve pan-plastomic patterns of .

The pan-plastome of Hemerocallis citrina reveals new insights into the genetic diversity and cultivation history of an economically important food plant.

Background: Hemerocallis citrina Baroni (Huang hua cai in Chinese) is a perennial herbaceous plant grown for its flower buds that are eaten fresh or dried and is known as the vegetarian three treasures. The nuclear genome of H. citrina has been reported, but the intraspecific variation of the plastome (plastid genome) has not yet been studied.

Response of gas-exchange characteristics and chlorophyll fluorescence to acute sulfur dioxide exposure in landscape plants.

To explore the toxicity and action mechanism of acute sulfur dioxide (SO) on urban landscape plants, a simulated SO stress environment by using fumigation chamber involving increasing SO concentration (0, 25, 50, 100, 200 mg m) was carried out among three species. After 72 h of exposure, SO-induced oxidative damage indicated by electrolyte leakage increased with higher dose of SO. Meanwhile, SO decreased the contents of chlorophyll a, chlorophyll b and carotenoid and increased the contents of sulfur.