Role of organic acid chelators in manganese regulation of lignin degradation byPhanerochaete chrysosporium

1993 ◽  
Vol 39-40 (1) ◽  
pp. 227-238 ◽  
Author(s):  
J. Perez ◽  
T. W. Jeffries
Keyword(s):  
Organic Acid ◽  
Lignin Degradation ◽  
Manganese Regulation

scholarly journals Transcriptome Reveals Roles of Lignin-Modifying Enzymes and Abscisic Acid in the Symbiosis of Mycena and Gastrodia elata

2021 ◽  
Vol 22 (12) ◽  
pp. 6557
Author(s):  
Li-Ying Ren ◽  
Heng Zhao ◽  
Xiao-Ling Liu ◽  
Tong-Kai Zong ◽  
Min Qiao ◽  
...  
Keyword(s):  
Biological Activity ◽  
Abscisic Acid ◽  
Lignin Degradation ◽  
Molecular Mechanisms ◽  
Receptor Protein ◽  
Gastrodia Elata ◽  
Upregulated Genes ◽  
Aba Biosynthesis ◽  
Seed Coats

Gastrodia elata is a well-known medicinal and heterotrophic orchid. Its germination, limited by the impermeability of seed coat lignin and inhibition by abscisic acid (ABA), is triggered by symbiosis with fungi such as Mycena spp. However, the molecular mechanisms of lignin degradation by Mycena and ABA biosynthesis and signaling in G. elata remain unclear. In order to gain insights into these two processes, this study analyzed the transcriptomes of these organisms during their dynamic symbiosis. Among the 25 lignin-modifying enzyme genes in Mycena, two ligninolytic class II peroxidases and two laccases were significantly upregulated, most likely enabling Mycena hyphae to break through the lignin seed coats of G. elata. Genes related to reduced virulence and loss of pathogenicity in Mycena accounted for more than half of annotated genes, presumably contributing to symbiosis. After coculture, upregulated genes outnumbered downregulated genes in G. elata seeds, suggesting slightly increased biological activity, while Mycena hyphae had fewer upregulated than downregulated genes, indicating decreased biological activity. ABA biosynthesis in G. elata was reduced by the downregulated expression of 9-cis-epoxycarotenoid dioxygenase (NCED-2), and ABA signaling was blocked by the downregulated expression of a receptor protein (PYL12-like). This is the first report to describe the role of NCED-2 and PYL12-like in breaking G. elata seed dormancy by reducing the synthesis and blocking the signaling of the germination inhibitor ABA. This study provides a theoretical basis for screening germination fungi to identify effective symbionts and for reducing ABA inhibition of G. elata seed germination.

scholarly journals Insight into the Ligand-Mediated Synthesis of Colloidal CsPbBr3 Perovskite Nanocrystals: The Role of Organic Acid, Base, and Cesium Precursors

ACS Nano ◽  
2016 ◽  
Vol 10 (8) ◽  
pp. 7943-7954 ◽  
Author(s):  
Aizhao Pan ◽  
Bo He ◽  
Xiaoyun Fan ◽  
Zeke Liu ◽  
Jeffrey J. Urban ◽  
...  
Keyword(s):  
Organic Acid ◽  
Acid Base ◽  
Perovskite Nanocrystals ◽  
Insight Into

The role of organic acid structures in changes of physicochemical and antioxidant properties of crosslinked chitosan films

2022 ◽  
Vol 31 ◽  
pp. 100792
Author(s):  
Wei Zhang ◽  
Qixing Jiang ◽  
Jiandong Shen ◽  
Pei Gao ◽  
Dawei Yu ◽  
...  
Keyword(s):  
Organic Acid ◽  
Antioxidant Properties ◽  
Crosslinked Chitosan ◽  
Chitosan Films

scholarly journals The role of organic matter amendment level on soil heating, organic acid accumulation, and development of bacterial communities in solarized soil

2016 ◽  
Vol 106 ◽  
pp. 37-46 ◽  
Author(s):  
Christopher W. Simmons ◽  
Brendan Higgins ◽  
Simon Staley ◽  
Lawrence D. Joh ◽  
Blake A. Simmons ◽  
...  
Keyword(s):  
Organic Matter ◽  
Organic Acid ◽  
Bacterial Communities ◽  
Soil Heating ◽  
Acid Accumulation

Differential role of symbiotic fungi in lignin degradation and food provision for fungus-growing termites (Macrotermitinae: Isoptera)

2003 ◽  
Vol 17 (2) ◽  
pp. 186-193 ◽  
Author(s):  
F. Hyodo ◽  
I. Tayasu ◽  
T. Inoue ◽  
J.-I. Azuma ◽  
T. Kudo ◽  
...  
Keyword(s):  
Lignin Degradation ◽  
Symbiotic Fungi ◽  
Food Provision

ORGANIC ACID METABOLISM IN GRAPE: ROLE OF PHOSPHOENOLPYRUVATE CARBOXYKINASE

2007 ◽  
pp. 599-602 ◽  
Author(s):  
F. Famiani ◽  
V. Casulli ◽  
P. Proietti ◽  
R.P. Walker ◽  
A. Battistelli
Keyword(s):  
Organic Acid ◽  
Phosphoenolpyruvate Carboxykinase ◽  
Acid Metabolism ◽  
Organic Acid Metabolism
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