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Long-Distance Movement of mRNAs in Plants

by Chao Xia 1,2 and Cankui Zhang 3,4,*
1
Maize Research Institute, Sichuan Agricultural University, Chengdu 611130, China
2
Key Laboratory of Biology and Genetic Improvement of Maize in Southwest Region, Ministry of Agriculture, Chengdu 611130, China
3
Department of Agronomy, Purdue University, West Lafayette, IN 47907, USA
4
Purdue Center for Plant Biology, Purdue University, West Lafayette, IN 47907, USA
*
Author to whom correspondence should be addressed.
Plants 2020, 9(6), 731; https://doi.org/10.3390/plants9060731
Received: 9 May 2020 / Revised: 6 June 2020 / Accepted: 8 June 2020 / Published: 10 June 2020
(This article belongs to the Special Issue mRNA Metabolism in Plants)
Long-distance transport of information molecules in the vascular tissues could play an important role in regulating plant growth and enabling plants to cope with adverse environments. Various molecules, including hormones, proteins, small peptides and small RNAs have been detected in the vascular system and proved to have systemic signaling functions. Sporadic studies have shown that a number of mRNAs produced in the mature leaves leave their origin cells and move to distal tissues to exert important physiological functions. In the last 3–5 years, multiple heterograft systems have been developed to demonstrate that a large quantity of mRNAs are mobile in plants. Further comparison of the mobile mRNAs identified from these systems showed that the identities of these mRNAs are very diverse. Although species-specific mRNAs may regulate the unique physiological characteristic of the plant, mRNAs with conserved functions across multiple species are worth more effort in identifying universal physiological mechanisms existing in the plant kingdom. View Full-Text
Keywords: phloem; long distance; systemic; mobile mRNA; heterograft phloem; long distance; systemic; mobile mRNA; heterograft
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Xia, C.; Zhang, C. Long-Distance Movement of mRNAs in Plants. Plants 2020, 9, 731.

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