Glutathione-Mediated Biotic Stress Tolerance in Plants

TY - CHAP

T1 - Glutathione-Mediated Biotic Stress Tolerance in Plants

AU - Hernández, J. A.

AU - Barba-Espín, G.

AU - Diaz-Vivancos, Pedro

PY - 2017/11/21

Y1 - 2017/11/21

N2 - Glutathione, along with ascorbate, is the main non-enzymatic antioxidant and redox buffers in plant cells. The reduced form of glutathione (GSH) is involved in the protection of cells from the oxidative damage induced by environmental challenges. GSH plays an important role in the recycling of reduced ascorbate in the reaction catalyzed by the enzyme dehydroascorbate reductase in the so-called ascorbate-glutathione cycle. Several studies reported that glutathione is involved in the induction of plant defense genes, and the increase in GSH and/or GSH-related enzymes is correlated with the resistance to different biotic challenges, including plant virus, bacteria, and fungi. Also, different works evidenced that decreases in GSH can be responsible for pathogen-elicited symptom development in susceptible plants. In that respect, it is important to mention that treatments leading to an increase in GSH and/or the redox state of glutathione can reduce the virus contents and/or the symptoms even during compatible plant-virus interactions. In addition, subcellular glutathione contents, reactive oxygen species production, and the antioxidative metabolism are considered valuable biotic stress indicators within plants during situations of pathogen attack.

AB - Glutathione, along with ascorbate, is the main non-enzymatic antioxidant and redox buffers in plant cells. The reduced form of glutathione (GSH) is involved in the protection of cells from the oxidative damage induced by environmental challenges. GSH plays an important role in the recycling of reduced ascorbate in the reaction catalyzed by the enzyme dehydroascorbate reductase in the so-called ascorbate-glutathione cycle. Several studies reported that glutathione is involved in the induction of plant defense genes, and the increase in GSH and/or GSH-related enzymes is correlated with the resistance to different biotic challenges, including plant virus, bacteria, and fungi. Also, different works evidenced that decreases in GSH can be responsible for pathogen-elicited symptom development in susceptible plants. In that respect, it is important to mention that treatments leading to an increase in GSH and/or the redox state of glutathione can reduce the virus contents and/or the symptoms even during compatible plant-virus interactions. In addition, subcellular glutathione contents, reactive oxygen species production, and the antioxidative metabolism are considered valuable biotic stress indicators within plants during situations of pathogen attack.

KW - Bacteria

KW - Dehydroascorbate reductase

KW - Fungi

KW - Glutathione

KW - Oxidative stress

KW - Redox state

KW - Virus

U2 - 10.1007/978-3-319-66682-2_14

DO - 10.1007/978-3-319-66682-2_14

M3 - Book chapter

AN - SCOPUS:85055014305

SN - 9783319666815

SP - 309

EP - 329

BT - Glutathione in Plant Growth, Development, and Stress Tolerance

PB - Springer

ER -