Effects of Exogenous Boron on Salt Stress Responses of Three Mangrove Species.

Salt stress is common but detrimental to plant growth, even in mangroves that live in saline areas. Boron (B) is an essential micronutrient that performs an important role in many functions in plants; however, its protective role under salt stress is poorly understood, especially in long-lived woody plants. In this study, we conducted an indoor experiment under simulated tidal conditions with four treatments (10‱ salinity, 40‱ salinity, 40‱ salinity + 100 μM B, and 40‱ salinity + 500 μM B) and three mangrove species (, , and ) to investigate the effects of exogenous B on salt tolerance in plant growth, morphology, physiology, and leaf anatomy.

MCGCL:Adversarial attack on graph contrastive learning based on momentum gradient candidates.

In the context of existing adversarial attack schemes based on unsupervised graph contrastive learning, a common issue arises due to the discreteness of graph structures, leading to reduced reliability of structural gradients and consequently resulting in the problem of attacks getting trapped in local optima. An adversarial attack method based on momentum gradient candidates is proposed in this research. Firstly, the gradients obtained by back-propagation are transformed into momentum gradients, and the gradient update is guided by overlaying the previous gradient information in a certain proportion to accelerate convergence speed and improve the accuracy of gradient update.

[Effects of mixed broadleaved tree species with pure plantation on soil microbial necromass carbon and organic carbon fractions].

Mixing native broadleaved tree species is a widely used method for renovating plantations. Soil microbial necromass carbon and organic carbon fractions are important parameters for evaluating the impacts of tree species mixing and soil organic carbon (SOC) stability. However, their responses to the mixing and renovation of plantation has not been understood yet.