偶氮杀菌剂通过改善番茄生理生化和解剖特性提高番茄抗旱性

IF 0.3
Abdelhadi A I Ali, E. Desoky, M. Rady
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引用次数: 1

摘要

为了研究杀菌剂Azoxystrobin是否能提高番茄在干旱条件下维持生理生化功能的潜力,在水分充足和亏缺灌溉条件下对番茄植株施用Azoxystrobin。干旱胁迫番茄植株在细胞膜稳定性(CMS)、相对含水量(RWC)、相对水分流失量(RWL)和叶绿素含量、生长性状、小叶和主要茎解剖特征等大部分生理指标均显著降低,脯氨酸和总酚含量、过氧化氢酶(CAT)、过氧化物酶(POD)和多酚氧化酶(PPO)活性、根系鲜重(FW)和干重(DW)均显著升高。与水分充足的对照植株相比,小叶海绵组织厚度较大。在全灌条件下,氮唑菌素处理显著提高了植株RWC和叶绿素含量、POD和PPO活性、根系DW、单株果数以及小叶和主茎的许多特征,显著降低了CMS和RWL、根、茎和植株长度、茎和植株FW以及茎木质部组织厚度。然而,与未处理干旱胁迫的植株相比,偶氮霉霉素处理改善了植株的干旱胁迫,显著提高了植株的CMS和游离脯氨酸含量、CAT、POD和PPO活性、游离酚和总酚含量、根重和单株果数以及小叶的海绵组织厚度,但对叶绿素和类胡萝卜素含量、根重、植株重和大部分解剖特征没有影响。这些结果支持了氮唑菌素叶面施用对水分充足和干旱胁迫的番茄植株可能有积极的影响。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Application of Azoxystrobin Fungicide Improves Drought Tolerance in Tomato, via Enhancing Physio-Biochemical and Anatomical Feature
To investigate whether the fungicide Azoxystrobin improves the potential to maintain physio-biochemical functions under drought, tomato plants were applied with Azoxystrobin under either well-watered and deficit irrigation conditions. Drought-stressed tomato plants showed significant reductions in most tested parameters of physiology [cell membrane stability (CMS), relative water content (RWC), relative water loss (RWL) and chlorophylls], growth attributes and leaflet and main stem anatomical features, while exhibited increases in contents of proline and total phenols, activities of catalase (CAT), peroxidase (POD) and polyphenol oxidase (PPO), fresh (FW) and dry (DW) weights of roots, and leaflet spongy tissue thickness compared to well-watered control plants. Under full irrigation, Azoxystrobin treatment significantly increased RWC and chlorophyll content, POD and PPO activities, root DW, number of fruits per plant and many features of leaflet and main stem, while significantly decreased CMS and RWL, root, shoot and plant lengths, shoot and plant FW, and stem xylem tissue thickness compared to the control plants sprayed with water. However, Azoxystrobin treatment ameliorated drought stress in tomato plants and significantly increased CMS and free proline content, activities of CAT, POD and PPO, and contents of free and total phenols, and root DW and number of fruits per plant, in addition to spongy tissue thickness of leaflet, but not affected chlorophylls and carotenoids contents, root FW, plant DW and most of anatomical features compared to the stressed plants without Azoxystrobin treatment. These results support that Azoxystrobin foliar application may have a positive effect on well-watered and drought-stressed tomato plants.
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来源期刊
International Letters of Natural Sciences
International Letters of Natural Sciences MULTIDISCIPLINARY SCIENCES-
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