Callose in leptoid cell walls of the moss <i>Polytrichum</i> and the evolution of callose synthase across bryophytes.

ABSTRACT:

Introduction

Leptoids, the food-conducting cells of polytrichaceous mosses, share key structural features with sieve elements in tracheophytes, including an elongated shape with oblique end walls containing modified plasmodesmata or pores. In tracheophytes, callose is instrumental in developing the pores in sieve elements that enable efficient photoassimilate transport. Aside from a few studies using aniline blue fluorescence that yielded confusing results, little is known about callose in moss leptoids.

Methods

Callose location and abundance during the development of leptoid cell walls was investigated in the moss Polytrichum commune using aniline blue fluorescence and quantitative immunogold labeling (label density) in the transmission electron microscope. To evalua

SUBMITTER: Renzaglia K 

PROVIDER: S-EPMC10879339 | biostudies-literature | 2024

REPOSITORIES: biostudies-literature