Journal of Plant Stress Physiology en-US [email protected] (Managing Editor) [email protected] (Managing Editor) Mon, 08 Jan 2024 12:42:12 +0530 OJS 60 Growth and biomass yield responses of Sphenostylis stenocarpa (Hochst. Ex A. Rich.) Harms accessions to waterlogging stress <p>Effects of waterlogging on the growth of six accessions of <em>Sphenostylis stenocarpa </em>were investigated. There accessions were TSs-5, TSs-7, TSs-8, TSs-9 TSs-10 and TSs-11. After growing <em>S. stenocarpa </em>for 4 weeks, results indicated that waterlogging significantly (p=0.05) reduced its growth parameters of <em>S. stenocarpa</em>. For shoot length; TSs-9 recorded the highest value (48.27±2.92 cm) above its control while TSs-11 (17.96±1.13 cm) had the lowest value. For petiole length, TSs-9 (3.62±0.33 cm) recorded the highest value while TSs-8 (0.93±0.93 cm) recorded the lowest value. Internode length had TSs-7 (6.10±0.78 cm) had the highest value while TSs-8 (2.87±2.87 cm) had the lowest value. The total photosynthetic pigment measurement showed that TSs-5 (45.0±0.65 mg/kg) with the highest value and TSs-8 (33.37±14.00 mg/kg) had the lowest value. For leaf area, TSs-7 (25.73±4.21 cm<sup>2</sup>) had the highest value while TSs-11 (16.13±2.82 cm<sup>2</sup>) recorded the lowest value. Total Fresh Weight (TFW), TSs-7 recorded the highest value (4.96 g) while TSs-8 recorded the lowest value (1.75 g). Root Fresh Weight (RFW), Tss-5 was observed to have the highest value (1.44 g) while Tss-11 recorded the lowest value (0.56 g). However, at 2 weeks after planting the effect of waterlogging stress on the growth parameter was not significant. The reduction in the growth of <em>S. stenocarpa </em>as a result of waterlogging stress might be due to the detrimental effect of flooding on O<sub>2 </sub>availability for plant cells and other plant metabolic activities of the plant. In areas with waterlogged soil conditions, <em>S. stenocarpa </em>should not be cultivated as it has poor and relatively low tolerance towards withstanding the impact of waterlogging; however, accession TSs-9 showed promising waterlogging tolerance ability.</p> Okon Godwin Okon, Imikan Anyieokpon Nyong, Ekomobong Etinam Akpan, Archibong Augustine Effiong, Ofonime Raphael Akata Copyright (c) 2024 Journal of Plant Stress Physiology Mon, 29 Jan 2024 00:00:00 +0530 An An overview on Azelaic Acid: Biosynthesis, signalling and the action under stress conditions in plants <p>Plants are exposed to various biotic and abiotic stress factors throughout their lives. For this reason, they have developed some defense mechanisms. They can induce systemic acquired resistance (SAR), which provides long-lasting protection against diverse pathogen attacks. In recent years, several chemical inducers (salicylic acid, glyceraldehyde-3-phosphate, azelaic acid, pipecolic acid, and dehydroabietic acid) have been determined to play roles in this mechanism. The transfer of these signal molecules from infected tissue to non-infected tissues through phloem provides potent defence communication. Azelaic acid is a well-known molecule that triggers salicylic acid accumulation under biotic stress as a priming factor to induce SAR, although little is known about its role under abiotic stress. Here, this review aims to call attention to the effects of AzA under abiotic stress conditions as well as biosynthesis, transport and signalling.</p> Burcu Seckin Dinler, Hatice Cetinkaya Copyright (c) 2024 Journal of Plant Stress Physiology Tue, 06 Feb 2024 00:00:00 +0530