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Plasmodesmata and Phloem-Based Trafficking of Macromolecules

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Symplasmic Transport in Vascular Plants

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Abstract

Plant cell fate specification, responses to stimuli, and developmental coordination at multicellular level are achieved by cell-to-cell communication. Plasmodesmata (PD), cytoplasmic nanochannels interconnecting neighboring cells, sophisticate such communication by regulating exchange of molecules. The composition, organization, and architecture of these interconnecting channels have emerged, and several models are available. PD play as major gatekeepers of signaling macromolecules such as proteins and/or RNAs and establish domains of symplasmically connected cells either to facilitate or restrict the transport of such signaling molecules. This chapter is dedicated for those who seek insightful review through supporting evidence on intercellular trafficking of a range of endogenous proteins and their updated non-cell-autonomous protein pathway (NCAPP) machinery/components taking care, together, of plant development.

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Abbreviations

CC:

Companion cell

CmPP1 CmPP2, CmPP16, and CmPP36:

Cucurbita maxima phloem protein 1, 2, 16, and 36

CPC:

CAPRICE

FLO:

FLORICAULA

FT:

FLOWERING LOCUS T

GFP:

Green fluorescent protein

KN1:

KNOTTED1

LFY:

LEAFY

NCAP:

Non-cell-autonomous protein

NCAPP:

Non-cell-autonomous protein pathway

PD:

Plasmodesmata

RNA:

Ribonucleic acid

SE:

Sieve element

SHR:

SHORT-ROOT

STM:

SHOOT MERISTEMLESS

UPB1:

UPBEAT1

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Acknowledgements

This work was supported by World Class University program grant R33-10002 through the National Research Foundation of Korea, funded by the Ministry of Education, Science and Technology and the Next-Generation BioGreen 21 Program (SSAC, grant PJ008109), Rural Development Administration, Republic of Korea.

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  1. Division of Applied Life Science (BK21/WCU Program), Plant Molecular Biology and Biotechnology Research Center, Gyeongsang National University, 6-306, 900 Gajwadong, Jinju, 660-701, GyeongNam, South Korea

    Dhinesh Kumar M.Sc., Ritesh Kumar M.Sc., Tae Kyung Hyun Ph.D. & Jae-Yean Kim Ph.D.

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  1. Dhinesh Kumar M.Sc.
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  2. Ritesh Kumar M.Sc.
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  3. Tae Kyung Hyun Ph.D.
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  1. Dept. Plant Morphology and Development, University of Wrocław, Wrocław, Poland

    Katarzyna Sokołowska

  2. Dept. of Plant Molecular Ecophysiology Faculty of Botany, University of Warsaw, Warsaw, Poland

    Paweł Sowiński

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Kumar, D., Kumar, R., Hyun, T.K., Kim, JY. (2013). Plasmodesmata and Phloem-Based Trafficking of Macromolecules. In: Sokołowska, K., Sowiński, P. (eds) Symplasmic Transport in Vascular Plants. Springer, New York, NY. https://doi.org/10.1007/978-1-4614-7765-5_7

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