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活性氧物种在蘑菇菌柄梯度伸长中的分布。

Reactive Oxygen Species Distribution Involved in Stipe Gradient Elongation in the Mushroom .

机构信息

Mycological Research Center, College of Life Sciences, Fujian Agriculture and Forestry University, Fuzhou 350002, China.

Institute of Urban Agriculture, Chinese Academy of Agricultural Sciences, Chengdu 610213, China.

出版信息

Cells. 2022 Jun 11;11(12):1896. doi: 10.3390/cells11121896.

DOI:10.3390/cells11121896
PMID:35741023
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC9221348/
Abstract

The mushroom stipe raises the pileus above the substrate into a suitable position for dispersing spores. The stipe elongates at different speeds along its length, with the rate of elongation decreasing in a gradient from the top to the base. However, the molecular mechanisms underlying stipe gradient elongation are largely unknown. Here, we used the model basidiomycete mushroom to investigate the mechanism of mushroom stipe elongation and the role of reactive oxygen species (ROS) signaling in this process. Our results show that O and HO exhibit opposite gradient distributions in the stipe, with higher O levels in the elongation region (ER), and higher HO levels in the stable region (SR). Moreover, NADPH-oxidase-encoding genes are up-regulated in the ER, have a function in producing O, and positively regulate stipe elongation. Genes encoding manganese superoxide dismutase (MnSOD) are up-regulated in the SR, have a function in producing HO and negatively regulate stipe elongation. Altogether, our data demonstrate that ROS (O/HO) redistribution mediated by NADPH oxidase and MnSODs is linked to the gradient elongation of the stipe.

摘要

菌柄将菌盖抬离基质到一个适合孢子分散的位置。菌柄在其长度上以不同的速度伸长，伸长率从顶部到底部逐渐降低。然而，菌柄梯度伸长的分子机制在很大程度上尚不清楚。在这里，我们使用模式担子菌蘑菇 来研究蘑菇菌柄伸长的机制以及活性氧（ROS）信号在这个过程中的作用。我们的结果表明，O 和 HO 在菌柄中表现出相反的梯度分布，伸长区（ER）中 O 水平较高，稳定区（SR）中 HO 水平较高。此外，编码 NADPH 氧化酶的基因在 ER 中上调，具有产生 O 的功能，并正向调节菌柄伸长。编码锰超氧化物歧化酶（MnSOD）的基因在 SR 中上调，具有产生 HO 的功能，并负向调节菌柄伸长。总之，我们的数据表明，由 NADPH 氧化酶和 MnSODs 介导的 ROS（O/HO）再分配与 菌柄的梯度伸长有关。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/a6cf/9221348/f12bb6dc7b89/cells-11-01896-g006.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/a6cf/9221348/ae4c398f0d6c/cells-11-01896-g001.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/a6cf/9221348/9f3d353c7655/cells-11-01896-g002.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/a6cf/9221348/28e809428e1f/cells-11-01896-g003.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/a6cf/9221348/43033d98d69e/cells-11-01896-g004.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/a6cf/9221348/c37005e9021c/cells-11-01896-g005.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/a6cf/9221348/f12bb6dc7b89/cells-11-01896-g006.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/a6cf/9221348/ae4c398f0d6c/cells-11-01896-g001.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/a6cf/9221348/9f3d353c7655/cells-11-01896-g002.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/a6cf/9221348/28e809428e1f/cells-11-01896-g003.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/a6cf/9221348/43033d98d69e/cells-11-01896-g004.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/a6cf/9221348/c37005e9021c/cells-11-01896-g005.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/a6cf/9221348/f12bb6dc7b89/cells-11-01896-g006.jpg

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