The journey to glory: receptor-like kinases in pollen tube growth

Double fertilization in angiosperm is a prerequisite for seed and fruit development and has been under close scrutiny in the past decades. Communications between male and female gametophytes are especially important in achieving successful reproduction, in which receptor-like kinases are dominant players. Here, we review progress on the functionality of receptor-like kinases (RLKs) in pollen tube growth and point out challenges facing the study of RLKs in pollen biology.