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Functional Plant Biology Functional Plant Biology Society
Plant function and evolutionary biology
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Functional Plant Biology

Functional Plant Biology

Volume 52 Number 7 2025

FP25085Effects of shading on physiological characteristics of Bletilla striata

Hanyue Xue, Xiaoxuan Zeng, Liu Yang, Miao Xiong, Xiaoyu Ming, Xiantong Wang, Xuan Yang, Xiaoyu Wang, Fuwen Luo, Chao Zhang and Xiaofang Yu 0000-0002-1933-636X

Moderate shading promotes the growth of Bletilla striata by enhancing chlorophyll content, photosynthetic efficiency, and antioxidant defence mechanisms. Seasonal water stress further modulated oxidative responses. These findings provide new insights into the adaptive strategies of B. striata to light and water availability, informing improved cultivation in horticultural and ecological applications.

FP25049Discovery of protein interactors of SUGARWINs in Saccharum officinarum using cDNA library screening

Aqsa Parvaiz 0000-0001-8180-2168, Muhammad Mubashar Zafar 0000-0002-5664-138X, Faiz Ahmad Joyia, Sultana Anwar, Andrei Smertenko, Hira Kamal 0000-0001-6503-2167, Saba Zafar 0000-0001-7317-0084, Mishal Subhan 0000-0002-6797-9175, Muhammad Sarwar Khan, Mahmoud F. Seleiman, Majed A. Alotaibi 0009-0000-3402-2476, Sezai Ercisli, Ghulam Mustafa and Xuefei Jiang

Sugarcane yield is threatened by fungal pathogens, prompting plants to activate defense proteins such as SUGARWINs. This study identified two SUGARWIN interactors – oxygen evolving enhancer protein 1 and synaptotagmin 1 – through cDNA library screening, with interactions confirmed by biomolecular fluorescence complementation assay. These proteins may contribute to fungal resistance, offering insights into sugarcane’s defense mechanisms and potential strategies for enhancing crop protection.

This article belongs to the collection: Functional Genomics for Developing Climate Resilient Crops - Volume II.

FP25092Nitric oxide regulates water status, antioxidant enzymes, nutritional balance, and growth of gazania (Gazania rigens) under drought stress

Muhammad Ahsan 0000-0002-7656-1547, Aasma Tufail, Aftab Jamal 0000-0001-8518-3130, Hatim M. Al-Yasi, Emanuele Radicetti, Muhammad Ammar Raza, Ali Bakhsh, Mateen Sajid, Zaibun-Nisa Memon and Mohammad Valipour

Drought exposure can lead to substantial agricultural yield losses, causing agriculture to collapse in many developing countries. This study aimed to examine the beneficial effects of nitric oxide spray on Gazania regens under drought conditions and the results showed that nitric oxide application helped reduce the negative effects of drought on gazania. It is suggested that supplementing with nitric oxide could be a practical and environmentally friendly approach to enhance drought resilience in Gazania regens.

FP24183Trehalose application mitigates drought stress in by enhancing photosynthesis, antioxidant activity, and osmolyte production in sugar beet (Betus vulgaris)

Yuyu Hao, Yuning Zhai, Piergiorgio Stevanato, Ruixing Li, Lihua Yu, Gui Geng, Lihua Wang, Yao Xu, Jiahui Liu 0009-0000-5516-1782 and Yuguang Wang

Trehalose is a disaccharide that can alleviate abiotic stress. In our study, different concentrations of Tre (5, 10, 15, 20, and 30 mM) were applied foliarly to sugar beet (Beta vulgaris) seedlings during drought stress. Compared with drought stress, 20 mM trehalose treatment enhanced the net photosynthetic rate, antioxidant enzyme activity, and altered the content of osmotic substances in sugar beet seedlings.

We examined the expression of four defense-related genes, PvPAL, PvLOX, PvGST, and PvPOD, in common bean under Helicoverpa armigera infestation and wounding. We found that all genes were significantly upregulated in response to H. armigera, with distinct expression profiles compared to wounding. Marked reductions in chlorophyll fluorescence parameters (Fv/Fm, PIABS, ETo/RC) were determined under both H. armigera infestation and wounding. In particular, findings highlight potential roles of PvLOX and PvGST genes in common bean’s defense against herbivory and wounding.

This article belongs to the collection: Functional Genomics for Developing Climate Resilient Crops - Volume II.

FP24297Enriched enzymes and crosstalking KEGG pathways in the rhizospheric soil fungiome of the wild plant Moringa oleifera

Rewaa S. Jalal 0000-0002-8372-9117, Abeer S. Aloufi, Abeer Al-Andal 0000-0003-3957-2391, Nahaa M. Alotaibi, Haneen W. Abuauf, Fatimah M. Alshehrei, Mohammed Y. Refai, Sahar A. Alshareef, Alaa A. Alnahari, Fatmah O. Sefrji, Abeer M. Almutrafy and Aala A. Abulfaraj 0000-0001-5833-2495

We investigate the rhizospheric mycobiome of Moringa oleifera, identifying pivotal genes encoding enzymes integral to metabolic pathways, as per KEGG. Fungal taxa from Mucoromycota and Zoopagomycota, including Rhizophagus and Mucor ambiguus, harbour enzymes crucial for metabolic, genetic and environmental processes. These enzymes facilitate the biosynthesis of metabolites such as acetyl-CoA and isoleucine essential for DNA repair, energy metabolism and membrane integrity. We underscore the symbiotic relationship between fungal enzymes and Moringa roots, optimising nutrient acquisition and energy provisioning.

This article belongs to the collection: Soil Microbiome and Abiotic Stress Tolerance in Plants.

The genetic regulation of soybean nitrogen fixation is poorly understood. Here, we describe evidence for a membrane bound basic helix loop helix transcription factor (GmbHLHm1) influencing nodule development and nitrogen fixation when either silenced (negative) or overexpressed (positive). We also demonstrate a preliminary link with gibberellic acid in the control of GmbHLHm1 expression in soybean (Glycine max) nodules.

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Best Paper Award

Phan Thi Thanh Hoai has been awarded the ASPS-FPB Best Paper Award for 2023.

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