Microscopic observation of a root-adhering factor Avin_16040 in Azotobacter vinelandii and Escherichia coli during association with rice root

Microbial adherence to plant root is the initial step in a beneficial plant-microbe interaction. Quantitative RT-PCR analysis deduced the Avin_16040 gene showed upregulated expression when Azotobacter vinelandii was adhered to the rice root. By transforming the full-length Avin_16040 gene into a h...

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Main Authors: Liew, Pauline Woan Ying, Jong, Bor Chyan, Najimudin Nazalan
Format: Article
Language:English
Published: Penerbit Universiti Kebangsaan Malaysia 2017
Online Access:http://journalarticle.ukm.my/12332/
http://journalarticle.ukm.my/12332/1/46_02_07.pdf
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author Liew, Pauline Woan Ying
Jong, Bor Chyan
Najimudin Nazalan,
author_facet Liew, Pauline Woan Ying
Jong, Bor Chyan
Najimudin Nazalan,
author_sort Liew, Pauline Woan Ying
building UKM Institutional Repository
collection Online Access
description Microbial adherence to plant root is the initial step in a beneficial plant-microbe interaction. Quantitative RT-PCR analysis deduced the Avin_16040 gene showed upregulated expression when Azotobacter vinelandii was adhered to the rice root. By transforming the full-length Avin_16040 gene into a heterologous host Escherichia coli, the recombinant clones displayed filamentous cell shapes in contrast to the rod-shape of wild type cells. Besides full-length gene insert, some E. coli clones were detected to contain truncated Avin_16040 gene inserts but still shape-shifted to filamentous cells. Further analysis by DNA sequencing revealed the shape-shifting E. coli clones contained 3’-end truncated Avin_16040 gene, while E. coli clones containing the 5’-end truncated Avin_16040 gene remained rod-shaped. The cell surface topographies of A. vinelandii and E. coli cells in the presence and absence of Avin_16040 gene and in association with rice root adherence were analysed using atomic force microscopy.
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spelling oai:generic.eprints.org:123322018-11-16T21:19:16Z http://journalarticle.ukm.my/12332/ Microscopic observation of a root-adhering factor Avin_16040 in Azotobacter vinelandii and Escherichia coli during association with rice root Liew, Pauline Woan Ying Jong, Bor Chyan Najimudin Nazalan, Microbial adherence to plant root is the initial step in a beneficial plant-microbe interaction. Quantitative RT-PCR analysis deduced the Avin_16040 gene showed upregulated expression when Azotobacter vinelandii was adhered to the rice root. By transforming the full-length Avin_16040 gene into a heterologous host Escherichia coli, the recombinant clones displayed filamentous cell shapes in contrast to the rod-shape of wild type cells. Besides full-length gene insert, some E. coli clones were detected to contain truncated Avin_16040 gene inserts but still shape-shifted to filamentous cells. Further analysis by DNA sequencing revealed the shape-shifting E. coli clones contained 3’-end truncated Avin_16040 gene, while E. coli clones containing the 5’-end truncated Avin_16040 gene remained rod-shaped. The cell surface topographies of A. vinelandii and E. coli cells in the presence and absence of Avin_16040 gene and in association with rice root adherence were analysed using atomic force microscopy. Penerbit Universiti Kebangsaan Malaysia 2017-06 Article PeerReviewed application/pdf en http://journalarticle.ukm.my/12332/1/46_02_07.pdf Liew, Pauline Woan Ying and Jong, Bor Chyan and Najimudin Nazalan, (2017) Microscopic observation of a root-adhering factor Avin_16040 in Azotobacter vinelandii and Escherichia coli during association with rice root. Malaysian Applied Biology, 46 (2). pp. 49-58. ISSN 0126-8643 http://www.mabjournal.com/index.php?option=com_content&view=article&id=644&catid=59:current-view&Itemid=56
spellingShingle Liew, Pauline Woan Ying
Jong, Bor Chyan
Najimudin Nazalan,
Microscopic observation of a root-adhering factor Avin_16040 in Azotobacter vinelandii and Escherichia coli during association with rice root
title Microscopic observation of a root-adhering factor Avin_16040 in Azotobacter vinelandii and Escherichia coli during association with rice root
title_full Microscopic observation of a root-adhering factor Avin_16040 in Azotobacter vinelandii and Escherichia coli during association with rice root
title_fullStr Microscopic observation of a root-adhering factor Avin_16040 in Azotobacter vinelandii and Escherichia coli during association with rice root
title_full_unstemmed Microscopic observation of a root-adhering factor Avin_16040 in Azotobacter vinelandii and Escherichia coli during association with rice root
title_short Microscopic observation of a root-adhering factor Avin_16040 in Azotobacter vinelandii and Escherichia coli during association with rice root
title_sort microscopic observation of a root-adhering factor avin_16040 in azotobacter vinelandii and escherichia coli during association with rice root
url http://journalarticle.ukm.my/12332/
http://journalarticle.ukm.my/12332/
http://journalarticle.ukm.my/12332/1/46_02_07.pdf