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Molecular Mechanisms Underlying Plant Stimulation by Microalgae and Cyanobacteria

A special issue of International Journal of Molecular Sciences (ISSN 1422-0067). This special issue belongs to the section "Molecular Plant Sciences".

Deadline for manuscript submissions: closed (31 March 2023) | Viewed by 3480

Special Issue Editors


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Guest Editor
National Research Council - Institute for Sustainable Plant Protection (CNR-IPSP), UOS, Florence, 10135 Turin, Italy
Interests: biotic stress; drought; molecular mechanisms; oxidative stress; salinity

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Guest Editor
National Research Council - Institute of BioEconomy (CNR-IBE), Florence, Italy
Interests: Selection and cultivation of microalgae and cyanobacteria as aquaculture feeds, biofertilizers, food ingredients and nutraceuticals, cosmetics and pharmaceuticals; photobioreactor development and optimization

Special Issue Information

Dear Colleagues,

Worldwide agriculture is facing new and concurrent challenges to boost productivity with the aim of feeding an increasing global population, and, at the same time, reducing the environmental impact, maintaining low production costs to sustain competition in a globalized economy. To this end, modern agriculture needs to introduce new tools to produce food in a sustainable way. In this context, biostimulant activity from microalgae and cyanobacteria could enhance crop performance, increase resistance to biotic and abiotic stress, improve defense to pathogens and reduce the risk of chemical-based fertilizer for human health as well as the environment.

This Special Issue aims to fill the gap regarding the molecular and physiological mechanisms of action involved in the biostimulant properties of MACB in all phases of plant development and/or when challenged by abiotic and biotic stress. Papers using transcriptomic, proteomics, and metabolomics analysis are welcome.

Dr. Bianca Elena Maserti
Dr. Graziella Chini Zittelli
Guest Editors

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Keywords

  • biostimulants
  • cyanobacteria
  • microalgae
  • abiotic stress
  • biotic stress

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Published Papers (1 paper)

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Research

16 pages, 37718 KiB  
Article
The Papain-like Cysteine Protease HpXBCP3 from Haematococcus pluvialis Involved in the Regulation of Growth, Salt Stress Tolerance and Chlorophyll Synthesis in Microalgae
by Wenfu Liu, Chunli Guo, Danqiong Huang, Hui Li and Chaogang Wang
Int. J. Mol. Sci. 2021, 22(21), 11539; https://doi.org/10.3390/ijms222111539 - 26 Oct 2021
Cited by 12 | Viewed by 2770
Abstract
The papain-like cysteine proteases (PLCPs), the most important group of cysteine proteases, have been reported to participate in the regulation of growth, senescence, and abiotic stresses in plants. However, the functions of PLCPs and their roles in stress response in microalgae was rarely [...] Read more.
The papain-like cysteine proteases (PLCPs), the most important group of cysteine proteases, have been reported to participate in the regulation of growth, senescence, and abiotic stresses in plants. However, the functions of PLCPs and their roles in stress response in microalgae was rarely reported. The responses to different abiotic stresses in Haematococcus pluvialis were often observed, including growth regulation and astaxanthin accumulation. In this study, the cDNA of HpXBCP3 containing 1515 bp open reading frame (ORF) was firstly cloned from H. pluvialis by RT-PCR. The analysis of protein domains and molecular evolution showed that HpXBCP3 was closely related to AtXBCP3 from Arabidopsis. The expression pattern analysis revealed that it significantly responds to NaCl stress in H. pluvialis. Subsequently, transformants expressing HpXBCP3 in Chlamydomonas reinhardtii were obtained and subjected to transcriptomic analysis. Results showed that HpXBCP3 might affect the cell cycle regulation and DNA replication in transgenic Chlamydomonas, resulting in abnormal growth of transformants. Moreover, the expression of HpXBCP3 might increase the sensitivity to NaCl stress by regulating ubiquitin and the expression of WD40 proteins in microalgae. Furthermore, the expression of HpXBCP3 might improve chlorophyll content by up-regulating the expression of NADH-dependent glutamate synthases in C. reinhardtii. This study indicated for the first time that HpXBCP3 was involved in the regulation of cell growth, salt stress response, and chlorophyll synthesis in microalgae. Results in this study might enrich the understanding of PLCPs in microalgae and provide a novel perspective for studying the mechanism of environmental stress responses in H. pluvialis. Full article
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