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Title: Sieve-element differentiation and phloem sap contamination
Sieve elements (SEs) degrade selected organelles and cytoplasmic structures when they differentiate. According to classical investigations, only smooth ER, mitochondria, sieve element plastids, and, in most cases, P-proteins remain in mature SEs. More recent proteomics and immunohistochemical studies, however, suggested that additional components including a protein-synthesizing machinery and a fully developed actin cytoskeleton operate in mature SEs. These interpretations are at odds with conventional imaging studies. Here we discuss potential causes for these discrepancies, concluding that differentiating SEs may play a role by ‘contaminating’ phloem exudates.  more » « less
Award ID(s):
1656769
PAR ID:
10053372
Author(s) / Creator(s):
Date Published:
Journal Name:
Current opinion in plant biology
Volume:
43
ISSN:
1879-0356
Format(s):
Medium: X
Sponsoring Org:
National Science Foundation
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