Weed Species from Tea Gardens as a Source of Novel Aluminum Hyperaccumulators.

Increased availability of toxic Al is the main constraint limiting plant growth on acid soils. Plants adapted to acid soils, however, tolerate toxic Al, and some can accumulate Al in their aerial parts to a significant degree. Studies on Al-tolerant and Al-accumulating species have mainly focused on the vegetation of acid soils distributed as two global belts in the northern and southern hemispheres, while acid soils formed outside these regions have been largely neglected.