Penicillium Glabrum Acted as a Heat Stress Relieving Endophyte in Soybean and Sunflower
Ismail Ismail 1  
,   Muhammad Hamayun 1  
,   Anwar Hussain 1  
,   Amjad Iqbal 2  
,   Sumera Afzal Khan 3  
,   Sarah Gul 4  
,   Hamayoon Khan 5  
,   Khushnood Ur Rehman 6  
,   Hamida Bibi 7  
,   In-Jung Lee 8  
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Department of Botany, Abdul Wali Khan University Mardan, Mardan, Pakistan
Department of Food Science & Technology, Abdul Wali Khan University Mardan, Mardan, Pakistan
Centre of Biotechnology and Microbiology, University of Peshawar, Pakistan
Department of Biological Sciences, FBAS, International Islamic University, Islamabad, Pakistan
Department of Agronomy, University of Agriculture Peshawar, Peshawar, Pakistan
Department of Botany, Islamia College University Peshawar, Peshawar, Pakistan
Department of Soil and Environmental Sciences, University of Agriculture Peshawar, Peshawar, Pakistan
School of Applied Biosciences, Kyungpook National University, Daegu 41566, Korea
Muhammad Hamayun   

Department of Botany, Abdul Wali Khan University Mardan, Garden Campus, 23200, Peshawar, Pakistan
Submission date: 2020-07-28
Final revision date: 2020-09-27
Acceptance date: 2020-10-18
Online publication date: 2021-04-08
Publication date: 2021-06-09
Pol. J. Environ. Stud. 2021;30(4):3099–3110
High temperature is one of the compelling ecological stresses faced by the plants owing to anthropogenic activities of mankind. Recently, endophytic fungi are considered to be a novel tool to counteract the consequences of thermal stress in crops. Owing to the problem, we isolated fungal endophytes from Dryopteris blanfordii and their growth favoring potential in rice seedlings. Endophytic fungi have the proficiency to secrete plant growth stimulating secondary metabolites that help the host plants to restore growth under harsh environments. The isolated Penicillium glabrum (DryR- 30) helped the host plant species, i.e. Glycine max L. and Helianthus annuus L. under thermal stress. P. glabrum associated with G. max and H. annuus exposed to 40ºC not only boosted their host growth attributes (total biomass, plant height and chlorophyll contents), but also significantly curtailed the synthesis of reactive oxygen species and lipids peroxidation. Moreover, the abscisic acid (ABA) and proline concentrations were significantly reduced, while the accumulation of ROS-degrading enzymes, such as catalase (CAT), peroxidase (POD), ascorbic acid oxidase (AAO), glutathione reductase (GR) and superoxide dismutase (SOD) were increased in P. glabrum-associated crops. Additionally, the protein, lipid and sugar contents in tested plants were also improved. These stirring findings suggest that P. glabrum can be applied to food crops as a thermal stress alleviation tool.