Needle anatomy with the endodermis as bottleneck for diffusion vs transpiration driven mass flow makes phloem loading complicated - here we provide suggestions „Towards better understanding of assimilate transfer and phloem loading in conifer trees“ https://dx.doi.org/10.1093/jxb/erag016
#Ecosystem #Ecology group at the Swiss Federal Research Institute WSL; Professor at ETH Zurich, Switzerland.


