The Potentiality of Marine Macro-Algae as Bio-Fertilizers to Improve the Productivity and Salt Stress Tolerance of Canola (Brassica napus L.) Plants

IF 3.4 2区农林科学 Q1 AGRONOMY

Agronomy-Basel Pub Date : 2019-03-20 DOI:10.3390/AGRONOMY9030146

Hashem H.A., Mansour H.A., El-Khawas S.A., Hassanein R.A.

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引用次数: 39

Abstract

The present study aimed to evaluate the potentiality of three seaweeds, which belong to different algal taxa (green alga Ulva lactuca Linnaeus, brown alga Cystoseira spp., and red alga Gelidium crinale (Hare ex Turner) Gaillon) as bio-fertilizers to improve the growth and yield of canola (Brassica napus L.) plants under greenhouse conditions. Furthermore, the impact of seaweeds in alleviating the effects of salt stress (75 and 150 mM NaCl) on canola plants was also investigated. The three examined seaweeds (applied as soil amendments) successfully alleviated the harmful effects of salinity on canola plants by significantly reducing the inhibition of chlorophyll a, b, total carbohydrate accumulation, and growth promoting hormones, while increasing antioxidative compounds, such as phenols, flavonoids, anthocyanin, and osmoprotectants, including total carbohydrates and proline. Phytochemical analysis of the three examined seaweeds suggests that their stimulatory effect on growth and productivity under normal and salinity growth conditions may be linked to their constituents of a wide variety of growth promotive hormones, including indole acetic acid, indole butyric acid, gibberellic acid, cytokinins, total carbohydrates, and phenolic compounds. U. lactuca was found to be the best candidate to be used as a bio-fertilizer to improve canola growth, yield, and salt stress tolerance.

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海洋巨藻作为生物肥料提高油菜产量和耐盐性的潜力植物

本研究旨在评价绿藻Ulva lactuca Linnaeus、褐藻Cystoseira spp.和红藻Gelidium crinale (Hare ex Turner) Gaillon作为生物肥料在温室条件下促进油菜(Brassica napus L.)生长和产量的潜力。此外，还研究了海藻对盐胁迫(75和150 mM NaCl)对油菜的缓解作用。所研究的三种海藻(用作土壤改良剂)通过显著降低叶绿素a、b、总碳水化合物积累和生长促进激素的抑制作用，同时增加酚类、类黄酮、花青素等抗氧化化合物和渗透保护剂(包括总碳水化合物和脯氨酸)，成功地减轻了盐度对油菜的有害影响。对三种被检测海藻的植物化学分析表明，它们在正常和盐度生长条件下对生长和生产力的刺激作用可能与它们的多种生长促进激素成分有关，包括吲哚乙酸、吲哚丁酸、赤霉素、细胞分裂素、总碳水化合物和酚类化合物。结果表明，油菜是提高油菜生长、产量和耐盐性的最佳生物肥料。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Agronomy-Basel Agricultural and Biological Sciences-Agronomy and Crop Science

CiteScore

6.20

自引率

13.50%

发文量

2665

审稿时长

20.32 days

期刊介绍： Agronomy (ISSN 2073-4395) is an international and cross-disciplinary scholarly journal on agronomy and agroecology. It publishes reviews, regular research papers, communications and short notes, and there is no restriction on the length of the papers. Our aim is to encourage scientists to publish their experimental and theoretical research in as much detail as possible. Full experimental and/or methodical details must be provided for research articles.