Salicylic Acid Improves Boron Toxicity Tolerance by Modulating the Physio-Biochemical Characteristics of Maize (Zea mays L.) at an Early Growth Stage
| Autor: | Naeem Iqbal, Hasnain Ishaq, Shafaqat Ali, Muhammad Rizwan, Abdulaziz Abdullah Alsahli, Muhammad Nawaz, Naeem Khan, Mohammed Nasser Alyemeni, Sabtain Ishaq |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2020 |
| Předmět: |
0106 biological sciences
0301 basic medicine 01 natural sciences Boric acid lcsh:Agriculture 03 medical and health sciences chemistry.chemical_compound growth regulators Carotenoid chemistry.chemical_classification fungi cereal crops lcsh:S food and beverages Ascorbic acid biomass reduction metal stress Horticulture 030104 developmental biology chemistry Anthocyanin Chlorophyll Toxicity Shoot Agronomy and Crop Science Salicylic acid 010606 plant biology & botany |
| Zdroj: | Agronomy, Vol 10, Iss 2013, p 2013 (2020) Agronomy; Volume 10; Issue 12; Pages: 2013 |
| ISSN: | 2073-4395 |
| Popis: | The boron (B) concentration surpasses the plant need in arid and semi-arid regions of the world, resulting in phyto-toxicity. Salicylic acid (SA) is an endogenous signaling molecule responsible for stress tolerance in plants and is a potential candidate for ameliorating B toxicity. In this study, the effects of seed priming with SA (0, 50, 100 and 150 µM for 12 h) on the growth, pigmentation and mineral concentrations of maize (Zea mays L.) grown under B toxicity were investigated. One-week old seedlings were subjected to soil spiked with B (0, 15 and 30 mg kg−1 soil) as boric acid. Elevating concentrations of B reduced the root and shoot length, but these losses were significantly restored in plants raised from seeds primed with 100 µM of SA. The B application decreased the root and shoot fresh/dry biomasses significantly at 30 mg kg−1 soil. The chlorophyll and carotenoid contents decreased with increasing levels of B, while the contents of anthocyanin, H2O2, ascorbic acid (ASA) and glycinebetaine (GB) were enhanced. The root K and Ca contents were significantly increased, while a reduction in the shoot K contents was recorded. The nitrate concentration was significantly higher in the shoot as compared to the root under applied B toxic regimes. However, all of these B toxicity effects were diminished with 100 µM SA applications. The current study outcomes suggested that the exogenously applied SA modulates the response of plants grown under B toxic conditions, and hence could be used as a plant growth regulator to stimulate plant growth and enhance mineral nutrient uptake under B-stressed conditions. |
| Databáze: | OpenAIRE |
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