Coordinated expression of sulfate uptake and components of the sulfate assimilatory pathway in maize

Plant Biology
Laura HopkinsM J Hawkesford

Abstract

A high-affinity-type sulfate transporter (Group 1: ZmST1;1, Accession No. AF355602) has been cloned from maize seedlings by RT-PCR. Tissue and cell specific localisation of this sulfate transporter has been determined along the developmental gradient of the root and in leaves of different ages. In S-sufficient conditions there was uniform low expression of ZmST1;1 in the root and very low expression in the leaves. Increased mRNA abundance and sulfate influx capacity indicated that S-starvation increased ZmST1;1 expression in roots, especially at the top of the root (just behind the seed, the area possessing most laterals and root hairs) compared to the root tip. Similarly a group 2, probable low affinity-type sulfate transporter, ZmST2;1, and also ATP-sulfurylase and APS-reductase but not OAS(thiol)lyase were induced by S-starvation and showed highest expression in the upper section of the root. S-starvation increased root/shoot ratio by 20 % and increased root lateral length and abundance in the region closest to the root tip. As the increase in root proliferation was not as great as the increase in mRNA pools, it was clear that there was a higher cellular abundance of the mRNAs for sulfate transporters, ATP-sulfurylase, and A...Continue Reading

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Citations

Nov 25, 2005·Photosynthesis Research·Stanislav Kopriva, Anna Koprivova
May 16, 2006·Plant Physiology·Fabio F NocitoGian Attilio Sacchi
Aug 19, 2011·Genome Génome / Conseil National De Recherches Canada·Andreas Benke, Benjamin Stich
Apr 21, 2009·Journal of Plant Physiology·Hatem RouachedA Bulak Arpat
Nov 4, 2006·Plant, Cell & Environment·Malcolm J Hawkesford, Luit J De Kok
Jan 30, 2015·Frontiers in Plant Science·Silke C Weckopp, Stanislav Kopriva
Feb 17, 2006·Annals of Botany·Dimitris L BouranisMalcolm J Hawkesford
Feb 9, 2006·Annals of Botany·Stanislav Kopriva
Oct 27, 2017·Proceedings of the National Academy of Sciences of the United States of America·Jose PlantaJoachim Messing
Apr 25, 2020·International Journal of Molecular Sciences·Yuta Kawakami, Navreet K Bhullar
Jun 25, 2008·Journal of Environmental Quality·Michela SchiavonMario Malagoli

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