PMID- 34682289 OWN - NLM STAT- PubMed-not-MEDLINE LR - 20211026 IS - 2309-608X (Electronic) IS - 2309-608X (Linking) VI - 7 IP - 10 DP - 2021 Oct 16 TI - Effect of High-Temperature Stress on Plant Physiological Traits and Mycorrhizal Symbiosis in Maize Plants. LID - 10.3390/jof7100867 [doi] LID - 867 AB - Increasing high temperature (HT) has a deleterious effect on plant growth. Earlier works reported the protective role of arbuscular mycorrhizal fungi (AMF) under stress conditions, particularly influencing the physiological parameters. However, the protective role of AMF under high-temperature stress examining physiological parameters with characteristic phospholipid fatty acids (PLFA) of soil microbial communities including AMF has not been studied. This work aims to study how high-temperature stress affects photosynthetic and below-ground traits in maize plants with and without AMF. Photosynthetic parameters like quantum yield of photosystem (PS) II, PSI, electron transport, and fractions of open reaction centers decreased in HT exposed plants, but recovered in AMF + HT plants. AMF + HT plants had significantly higher AM-signature 16:1omega5cis neutral lipid fatty acid (NLFA), spore density in soil, and root colonization with lower lipid peroxidation than non-mycorrhizal HT plants. As a result, enriched plants had more active living biomass, which improved photosynthetic efficiency when exposed to heat. This study provides an understanding of how AM-mediated plants can tolerate high temperatures while maintaining the stability of their photosynthetic apparatus. This is the first study to combine above- and below-ground traits, which could lead to a new understanding of plant and rhizosphere stress. FAU - Mathur, Sonal AU - Mathur S AD - Photosynthesis Laboratory, School of Life Sciences, Devi Ahilya University, Indore 452001, India. AD - Adaptive Cropping Systems Laboratory, USDA-ARS, Beltsville Agricultural Research Center, Beltsville, MD 20750, USA. FAU - Agnihotri, Richa AU - Agnihotri R AD - ICAR-Indian Institute of Soybean Research, Indore 452001, India. FAU - Sharma, Mahaveer P AU - Sharma MP AUID- ORCID: 0000-0001-5331-2081 AD - ICAR-Indian Institute of Soybean Research, Indore 452001, India. FAU - Reddy, Vangimalla R AU - Reddy VR AD - Adaptive Cropping Systems Laboratory, USDA-ARS, Beltsville Agricultural Research Center, Beltsville, MD 20750, USA. FAU - Jajoo, Anjana AU - Jajoo A AUID- ORCID: 0000-0002-2333-0067 AD - Photosynthesis Laboratory, School of Life Sciences, Devi Ahilya University, Indore 452001, India. AD - School of Biotechnology, Devi Ahilya University, Indore 452001, India. LA - eng GR - PDFWM-2014-15-GEMAD-23945/University Grants Commission/ PT - Journal Article DEP - 20211016 PL - Switzerland TA - J Fungi (Basel) JT - Journal of fungi (Basel, Switzerland) JID - 101671827 PMC - PMC8539748 OTO - NOTNLM OT - PSI OT - PSII OT - arbuscular mycorrhizal fungi OT - fatty acid biomarkers OT - high temperature OT - maize (Zea mays L.) OT - photosynthesis COIS- The authors declare no conflict of interest. EDAT- 2021/10/24 06:00 MHDA- 2021/10/24 06:01 PMCR- 2021/10/16 CRDT- 2021/10/23 01:10 PHST- 2021/08/27 00:00 [received] PHST- 2021/10/12 00:00 [revised] PHST- 2021/10/14 00:00 [accepted] PHST- 2021/10/23 01:10 [entrez] PHST- 2021/10/24 06:00 [pubmed] PHST- 2021/10/24 06:01 [medline] PHST- 2021/10/16 00:00 [pmc-release] AID - jof7100867 [pii] AID - jof-07-00867 [pii] AID - 10.3390/jof7100867 [doi] PST - epublish SO - J Fungi (Basel). 2021 Oct 16;7(10):867. doi: 10.3390/jof7100867.