Eco-friendly management of wheat stripe rust through application of Bacillus subtilis in combination with plant defense activators

Khan, Muhammad Arslan; Raheel, Muhammad; Khan, Sajid Aleem; Abid, Allah Ditta; Shahzad, Sohail Anjum; Hanif, Atif

doi:10.1016/j.jksus.2023.102587

Cited by 2 publications

(5 citation statements)

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“…The reason for the effectiveness of salicylic acid and indole acetic acid in reducing stripe rust infection type may be due to their ability to induce plant defense responses against pathogens [ 14 ]. Salicylic acid has a main role in systemic acquired resistance (SAR), a plant defense mechanism against pathogens, while Indole acetic acid has been shown to induce the expression of genes involved in plant defense responses [ 11 , 18 , 55 ]. In contrast, the current study found that oxalic acid had the lowest decrease in stripe rust infection type.…”

Section: Discussionmentioning

confidence: 99%

“…This suspension contained 15 g of dextrose, 0.25 g of chitosan, and 0.25 g of salicylic acid. The ingredients were thoroughly mixed to form a homogeneous suspension, as described in reference [ 11 ]. The total number of pots was divided into two groups: the first group underwent pre-inoculation with Pst , while the second group underwent post-inoculation treatment.…”

Section: Methodsmentioning

confidence: 99%

“…Traditional methods of controlling WYR disease have relied on the use of chemical pesticides, which can have adverse environmental impacts and contribute to the development of pesticide resistance [ 9 ]. Fungicides for WYR control are extensively employed in many regions of the world for high production, and their efficiency is dependent on the crop stage and disease severity [ 10 , 11 ]. Sadly, improper usage of chemical pesticides causes deadly environmental contamination due to their lasting effects.…”

Section: Introductionmentioning

confidence: 99%

“…The pathogen’s high pathogenicity variation allows its population to grow fast and spread under favorable climatic circumstances, culminating in catastrophic pandemics within cropping seasons [ 13 ]. Yet, wheat breeding techniques are not sufficient for coping with the newly developed Pst strains and developing wheat varieties with high yields and resistance to WYR disease [ 11 ]. Nevertheless, using resistant types alone may not be adequate to entirely prevent yellow rust; other management measures may be required [ 12 ].…”

Section: Introductionmentioning

confidence: 99%

“…Using bioagents or endophytic bacteria can be a promising approach for controlling WYR [ 11 ]. These naturally occurring microorganisms can help protect the plant from fungal diseases by competing with the pathogen for nutrients or producing antifungal compounds [ 14 ].…”

Section: Introductionmentioning

confidence: 99%

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Assessing the Effectiveness of Eco-Friendly Management Approaches for Controlling Wheat Yellow Rust and Their Impact on Antioxidant Enzymes

Zakaria

Atia

Ali

et al. 2023

Plants

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Wheat stripe rust, caused by Puccinia striiformis f. sp. tritici (Pst), is a destructive disease that causes significant yield losses in wheat production worldwide, including in Egypt. The use of biocontrol agents is among the best eco-friendly management strategies to control this disease, as they are more sustainable and environmentally friendly than traditional chemical control methods. In a comparative analysis, antioxidant enzyme activity and various management approaches were compared with two bacterial biocontrol agents, Bacillus subtilis and Pseudomonas putida. This study showed the remarkable efficacy of endophytic bacteria, B. subtilis and P. putida, in mitigating wheat stripe rust infection across three wheat varieties, namely Misr1, Gimmeiza11, and Sids12. B. subtilis exhibited superior performance compared to P. putida, resulting in infection types of 1 and 2.66, respectively, following inoculation. The highest reduction rate was observed with Tilit fungicide (500 ppm), followed by B. subtilis and Salicylic acid (1000 ppm), respectively. Variations in wheat varieties’ response to Pst infection were observed, with Misr1 exhibiting the lowest infection and Sids12 showing high susceptibility. Among the tested inducers, Salicylic acid demonstrated the greatest reduction in disease infection, followed by Indole acetic acid, while Oxalic acid exhibited the lowest decrease. Additionally, the study evaluated the activities of five antioxidant enzymes, including Catalase, Ascorbate peroxidase (APX), glutathione reductase (GR), Superoxide dismutase (SOD), and peroxidase (POX), in the wheat-stripe rust interaction under different integrated management approaches. The wheat variety Misr1 treated with Tilit (500 ppm), B. subtilis, Salicylic acid, Montoro (500 ppm), and P. putida exhibited the highest increase in all enzymatic activities. These findings provide valuable insights into the effectiveness of B. subtilis and P. putida as biocontrol agents for wheat stripe rust control in Egypt, emphasizing their potential role in sustainable, integrated, and environmentally friendly management practices.

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