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Dr. Biancaelena Maserti

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Istituto per la Protezione Sostenibile delle Piante, Consiglio Nazionale delle Ricerche, UOS Firenze, Florence, Italy
Interests: abiotic stress; antioxidant system; glyoxalase pathway; poliploid plants; crop wild type and relatives; landraces

Special Issue Information

Dear Colleagues,

Plant growth and crop productivity are strongly influenced by abiotic stresses, such as cold, drought, mineral imbalance, heat, and ozone. As a common consequence of plant exposure to abiotic stresses, the production of reactive oxygen species (ROS) and methylglyoxal (MG) increase. ROS and MG can react with proteins, lipids and nucleic acids, resulting in metabolic dysfunction and death.

To scavenge those toxic compounds, plants have a complex network of mechanisms, including the activation of antioxidant enzymes such as SOD, CAT, and those of Halliwell-Asada Cycle to control ROS levels. The glyoxalase system can directly detoxify MG or can play a role in oxidative stress response by maintaining gluthathione (GSH) homeostasis. Several studies have showed that increased plant resistance to abiotic stresses are often correlated with high levels of glyoxalase and antioxidant enzyme activity.

This Special Issue will collect novel research papers and original reviews focusing on the response of the glyoxalase system and antioxidant enzymes in plants exposed to abiotic stress, with particular attention to their possible combined regulatory roles in alleviating oxidative damage and increase plant resistance to abiotic stress.

Dr. Biancaelena Maserti
Guest Editor

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Keywords

Abiotic stress
Antioxidant enzymes
Gluthathione
Glyoxalase pathway
MG
ROS

Published Papers (1 paper)

Research

14 pages, 1218 KiB

Open AccessArticle

Oxidative Stress and Antioxidative Activity in Leaves and Roots of Carrot Plants Induced by Candidatus Phytoplasma Solani

by Petar Mitrovic, Ivica Djalovic, Biljana Kiprovski, Sonja Veljović Jovanović, Vojislav Trkulja, Aleksandra Jelušić and Tatjana Popović

Plants 2021, 10(2), 337; https://doi.org/10.3390/plants10020337 - 10 Feb 2021

Cited by 2 | Viewed by 2804

Abstract

The present study examined the effects of Candidatus Phytoplasma solani infection on antioxidative metabolism in leaves and roots of carrot (Daucus carota L.). Disease symptoms appeared at the end of June in the form of the chlorosis on some of the leaves, which became intensely red one week later, while the previously healthy leaves from the same branch becme chlorotic. A few days later, all leaves from the infected leaf branch were intensely red. Infected plants also had slower growth compared to the healthy ones with fewer leaf branches developed. The roots of infected plants were less developed, seared, or gummy with or without brown-colored root hair. The presence of the pathogen was detected by sequencing the 16S rRNA. National Center for Biotechnology Information (NCBI) BLAST analyses of the obtained sequence revealed 100% identity of tested strain with deposited Ca. Phytoplasma solani strains from various countries and hosts, all belonging to the “stolbur” group (16SrXII-A). Identity of 99.74% was found when the tested Serbian strain (MF503627) was compared with the reference stolbur strain STOL11 (AF248959). The oxidative damage of membranes in carrot cells was accompanied by a decrease in the content of photosynthetic pigments. Furthermore, for the determination of specific scavenging properties of the extracts, in vitro antioxidant assay was performed. In phytoplasma-infected carrot leaves, there was a greater reduction in the level of glutathione content (GSH); however; flavonoids and anthocyanidins seem to be responsible for the accompanied increased antioxidative capacity against hydroxyl radical and hydrogen peroxide. Full article

(This article belongs to the Special Issue Insight into Plant Response to Abiotic Stress: The Role of Glyoxalase Pathway and Antioxidant System)

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