The Physiological Responses of Tea to pH and Cd Conditions and the Effect of the CsHMA2 on Cd Transport.

ABSTRACT: Soil acidification in tea (Camellia sinensis L.) gardens leads to nutrient depletion, inhibits the growth of tea plants, reduces tea quality, and activates heavy metals such as cadmium (Cd) in the soil. To clarify the impact of soil pH under acidified conditions on tea plant growth physiology and the key genes involved in Cd²⁺ transport in tea plants, this study planted 'Longjing 43' under different pH levels (4.0, 4.5, and 5.5) and Cd concentrations (T1 = 0 mg L^-1, T2 = 0.01 mg L^-1, T3 = 0.05 mg L^-1, and T4 = 0.2 mg L^-1). The results showed that the concentration of Cd in tea plants from highest to lowest was root > stem > mature leaves > young leaves. Under T4, with decreasing pH, the total chlorophyll significantly decreased,

SUBMITTER: Yang B 

PROVIDER: S-EPMC11859789 | biostudies-literature | 2025 Feb

REPOSITORIES: biostudies-literature