COP1 Mediates Dark-Induced Stomatal Closure by Suppressing , and Expression to Promote NO Accumulation in Arabidopsis Guard Cells.

RING-finger-type ubiquitin E3 ligase Constitutively Photomorphogenic 1 (COP1) and floral integrators such as FLOWERING LOCUS T (FT), TWIN SISTER OF FT (TSF) and SUPPRESSOR OF OVEREXPRESSION OF CONSTANS1 (SOC1) have been identified as regulators of stomatal movement. However, little is known about their roles and relationship in dark-induced stomatal closure. Here, we demonstrated that COP1 is required for dark-induced stomatal closure using mutant.

Ethylene Acts as a Local and Systemic Signal to Mediate UV-B-Induced Nitrate Reallocation to Arabidopsis Leaves and Roots via Regulating the ERFs-NRT1.8 Signaling Module.

Nitrate is the preferred nitrogen source for plants and plays an important role in plant growth and development. Under various soil stresses, plants reallocate nitrate to roots to promote stress tolerance through the ethylene-ethylene response factors (ERFs)-nitrate transporter (NRT) signaling module. As a light signal, ultraviolet B (UV-B) also stimulates the production of ethylene.

Hydrogen peroxide as a mediator of 5-aminolevulinic acid-induced Na retention in roots for improving salt tolerance of strawberries.

To explore the mechanisms of 5-aminolevulinic acid (ALA)-improved plant salt tolerance, strawberries (Fragaria × ananassa Duch. cv. 'Benihoppe') were treated with 10 mg l ALA under 100 mmol l NaCl stress.

[Staged strategy of plants in response to drought stress].

Drought is one of the most important abiotic factors limiting plant growth, development and survival. Due to global warming, the drought episodes in the future will become more frequent and severe. Therefore, the plant responses to drought stress, especially the drought-resistant mechanisms, have been a focus of the studies.

[Effects of drying and re-watering on the photosynthesis and active oxygen metabolism of Periploca sepium seedlings].

Taking two-year-old Periploca sepium seedlings as test materials, an experiment with controlled soil water contents was conducted to study the effects of repeated drying and re-watering on the leaf photosynthetic characteristics and the lipid peroxidation and antioxidant system in young leaves, mature leaves, old leaves, new stems, and fine roots. The seedlings were subjected to three cycles of drying and re-watering, with regular irrigation to maintain the soil water content at around 80% of field capacity as the control (CK). Under drying, the leaf relative water content (RWC) and net photosynthesis rate (Pn) decreased significantly, while the leaf photosynthetic pigments content increased.