Mutations in type II Golgi-localized proton pyrophosphatase AVP2;1/VHP2;1 affect pectic polysaccharide rhamnogalacturonan-II and alter root growth under low boron condition in Arabidopsis thaliana

Autor: Amarachukwu Faith Onuh, Kyoko Miwa

Publikováno v: Frontiers in Plant Science, Vol 14 (2023)

The essential plant nutrient boron is required for the crosslinking of the pectin polysaccharide, rhamnogalacturonan II (RG-II). The synthesis of the pectic polysaccharides takes place in the Golgi apparatus, acidified by proton pumps. AVP2;1/VHP2;1

Externí odkaz: https://doaj.org/article/b5c65456daed449fa53fba5af91841e8

The structure of a Bacteroides thetaiotaomicron carbohydrate-binding module provides new insight into the recognition of complex pectic polysaccharides by the human microbiome

Autor: Filipa Trovão, Viviana G. Correia, Frederico M. Lourenço, Diana O. Ribeiro, Ana Luísa Carvalho, Angelina S. Palma, Benedita A. Pinheiro

Publikováno v: Journal of Structural Biology: X, Vol 7, Iss , Pp 100084- (2023)

The Bacteroides thetaiotaomicron has developed a consortium of enzymes capable of overcoming steric constraints and degrading, in a sequential manner, the complex rhamnogalacturonan II (RG-II) polysaccharide. BT0996 protein acts in the initial stages

Externí odkaz: https://doaj.org/article/3f0699fe69f6401ab6e4e1a55166cfec

Protocols for isolating and characterizing polysaccharides from plant cell walls: a case study using rhamnogalacturonan-II

Autor: William J. Barnes, Sabina Koj, Ian M. Black, Stephanie A. Archer-Hartmann, Parastoo Azadi, Breeanna R. Urbanowicz, Maria J. Peña, Malcolm A. O’Neill

Publikováno v: Biotechnology for Biofuels, Vol 14, Iss 1, Pp 1-20 (2021)

Abstract Background In plants, a large diversity of polysaccharides comprise the cell wall. Each major type of plant cell wall polysaccharide, including cellulose, hemicellulose, and pectin, has distinct structures and functions that contribute to wa

Externí odkaz: https://doaj.org/article/eddee62f53f5432b92e043dd6d6327af

Making and breaking of boron bridges in the pectic domain rhamnogalacturonan‐II at apoplastic pH in vivo and in vitro

Autor: Rifat Ara Begum, David J. Messenger, Stephen C. Fry

Publikováno v: Begum, R, Messenger, D J & Fry, S C 2023, ' Making and breaking of boron bridges in the pectic domain rhamnogalacturonan-II at apoplastic pH in vivo and in vitro ', The Plant Journal . https://doi.org/10.1111/tpj.16112

Cross-linking of the cell-wall pectin domain rhamnogalacturonan-II (RG-II) via boron bridges between apiose residues is essential for normal plant growth and development, but little is known about its mechanism or reversibility. We characterized the

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::f3ab708245035bd98e305ff61b0ccab7
https://doi.org/10.1111/tpj.16112

With a Little Help from My Cell Wall: Structural Modifications in Pectin May Play a Role to Overcome Both Dehydration Stress and Fungal Pathogens

Autor: Ariana D. Forand, Y. Zou Finfrock, Miranda Lavier, Jarvis Stobbs, Li Qin, Sheng Wang, Chithra Karunakaran, Yangdou Wei, Supratim Ghosh, Karen K. Tanino

Publikováno v: Plants, Vol 11, Iss 3, p 385 (2022)

Cell wall structural modifications through pectin cross-linkages between calcium ions and/or boric acid may be key to mitigating dehydration stress and fungal pathogens. Water loss was profiled in a pure pectin system and in vivo. While calcium and b

Externí odkaz: https://doaj.org/article/5705eec59e56450093f13372a1b2d83d