Either way, they are never wanted. We’re talking about those annoying white strings on bananas, or more technically, “phloem ...

Citrus greening disease has weakened trees, which is why recent hurricanes have been able to cause so much more damage. A ...

Usually, the sieve-tubes of the phloem have been regarded as the channels of sugar transport, as micro-chemical observations, such as those of Prof. Mangham, seemed to show considerable quantities ...

Though the tree appeared to be thriving, its phloem, the fibrous layer under the bark that transports nutrients, was dry and brown. Six moved to the next tree, another seemingly healthy one.

Specialised plant cells include root hair cells, palisade cells, xylem cells and phloem cells. Just like animals, plants are made of tiny little cells. Like animal cells, basic plant cells have a ...