Effects of iron and boron combinations on the suppression of Fusarium wilt in banana

Dong, Xian; Wang, Min; Ling, Ning; Shen, Qirong; Guo, Shiwei

doi:10.1038/srep38944

Cited by 35 publications

(20 citation statements)

References 41 publications

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“…Indeed, iron and other nutrients (e.g. Zn 2+ , Mn 2+ , Cu 2+ ) known as reductants in redox reactions have a deleterious effect on the establishment of Fusarium species in plants (Ruiz et al 2015;Dong et al 2016), while mycorrhizal fungi provide iron to plants (Adeleke et al 2012). Our current results indicate that iron availability is highly associated with the vulnerability of plant roots to necrotrophic pathogens.…”

Section: Discussionmentioning

confidence: 65%

“…Iron levels have been found to play an essential role in both fungal virulence and plant defense response (Dong et al 2016;Expert and O'Brian 2012). The effect of iron and ROS production on fungal colonization has indicated that the role of iron is more important for the establishment of necrotrophic pathogens than ectomycorrhizal fungal species.…”

Section: Discussionmentioning

confidence: 99%

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Redistribution of iron and hydrogen peroxide in Pinus sylvestris roots in response to trophically diverse fungi

et al. 2018

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The simultaneous over-accumulation of Fe, hydrogen peroxide and superoxide can result in the generation of hydroxyl radicals, which play a significant role in the interactions between plant hosts and invading fungi. The physiological response to infection by pathogenic or mycorrhizal fungi may, however, be determined by the root zone. The objective of the present study was to use light microscopy to determine whether iron and hydrogen peroxide are differentially distributed in P. sylvestris roots in response to colonization by necrotrophic pathogens (Fusarium oxysporum and Rhizoctonia solani) vs. mycorrhizal fungi (Hebeloma crustuliniforme and Laccaria bicolor) in in vitro culture. It was also of interest to determine how hydrogen peroxide, superoxide, and iron added to substrate in vitro impacted the ability of trophically different fungi to grow. Infection by necrotrophic fungi, especially by F. oxysporum, were associated with a significantly higher accumulation of both forms of iron (Fe 2+ and Fe 3+) in the meristematic root zone, relative to the accumulation of these forms of iron in response to ectomycorrhizal fungi. Iron supplementation of solid culture medium reduced the growth of pathogenic fungi to a greater extent than the growth of mycorrhizal fungi. In contrast to the distribution of iron, cells in the elongation zone of P. sylvestris roots generally exhibited the highest accumulation of hydrogen peroxide. The growth of mycorrhizal fungi was more inhibited by the presence of hydrogen peroxide in the solid culture medium than by any other supplemented compounds. This research indicate that the distribution of iron and hydrogen peroxide in roots of P. sylvestris is related to the trophic strategy of the colonizing fungi.

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Section: Discussionmentioning

confidence: 65%

Section: Discussionmentioning

confidence: 99%

Redistribution of iron and hydrogen peroxide in Pinus sylvestris roots in response to trophically diverse fungi

et al. 2018

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“…Unsur Fe juga berperan dalam respons ketahanan tanaman terhadap infeksi penyakit (Greenshields et al 2014;Aznar et al 2015). Dong et al (2016) melaporkan bahwa ketersedian Fe yang tinggi mampu menurunkan perkecambahan dan pertumbuhan F. oxysporum, menurunkan produksi asam fusarik penyebab penyakit, dan pada akhirnya menurunkan keparahan penyakit pada tanaman pisang. Peran Fe dalam menekan suatu penyakit dapat terjadi melalui katalisasi pembentukan ROS (reactive oxygen species), peningkatkan ekspresi gen ketahanan PR1, deposisi kalose, akumulasi H 2 O 2 , peningkatan akumulasi p-coumaroylagmatine, dan aktivasi gen FER1 yang berperan dalam menjaga kesetabilan jumlah Fe dalam tanaman (Kieu et al 2012;Aznar et al 2015).…”

Section: Pembahasanunclassified

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2020

J Fitopatol Indones

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Penyakit busuk akar dan pangkal batang (BAPB) tebu merupakan penyakit baru yang saat ini muncul menjadi masalah di perkebunan tebu di Lampung dan Sumatera Selatan. Penelitian bertujuan mengetahui model perkembangan penyakit, AUDPC, laju infeksi (r), dan pengaruh anasir cuaca dan kondisi tanah (sifat fisika dan kimia tanah) pada perkembangan penyakit busuk akar dan pangkal batang tebu di Sumatera Selatan. Pengamatan penyakit BAPB dilakukan pada tiga varietas tebu yang berbeda pada lahan yang tahun sebelumnya terdapat serangan penyebab penyakit. Pengamatan insidensi penyakit diamati tiap minggu selama delapan minggu. Data insidensi penyakit digunakan untuk menganalisis model perkembangan penyakit, AUDPC, dan laju infeksi penyakit BAPB tebu. Data mingguan kondisi anasir cuaca diambil dari BMKG Bandara Sultan Mahmud Badaruddin, Palembang. Sampel tanah diambil dari tiga katogeri insidensi penyakit, yaitu sehat (tidak ada serangan), sedang (insidensi penyakit 25.1%-50%), dan berat (insidensi penyakit 50.1%-75%). Hasil penelitian menunjukkan bahwa penyakit berkembang mengikuti model monomolekuler dan logistik. Nilai AUPDC dan laju infeksi (r) pada model monomolekuler lebih kecil dibandingkan dengan model logistik. Koefisien efek langsung curah hujan dan kelembaban relatif pada penyakit ialah positif (1.27 dan 0.46 berturut-turut), bertentangan dengan suhu dan durasi iradiasi yang memiliki koefisien negatif (-0.33 dan-0.45 berturut-turut). Sementara itu, K tersedia dan permeabilitas berpengaruh positif pada penyakit, sedangkan kandungan N total dan Fe tersedia berpengaruh negatif pada penyakit.

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“…This increase in B content may be part of a defense mechanism of plants against Fusarium sp. for reducing or controlling disease severity (Dong et al 2016;Jiang et al 2016) and suggests a potentially important role for B in reducing disease development (Chappelka and Grulke 2016). Further studies should assess the role of B in stress and disease biology over time and for different experimental setups to confirm that its role in a stress-defense mechanism.…”

Section: Ecm Treatmentmentioning

confidence: 99%

Effects of soil nutrient availability and ozone on container-grown Japanese larch seedlings and role of soil microbes

et al. 2019

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other than ozone. Inoculation of roots with ectomycorrhizae had negligible influence on the effects of either soil nutrient availability or ozone. However, this lack of effect may be upon impeded formation of complete mycorrhizal root tips due to factors other than the manipulated variables. B and Na appeared to have an important role in stress responses, so further studies to examine their link with physiological mechanisms as a function of time. This study provides an important perspective for designing forestry practices to enhance seedling health.

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Effects of iron and boron combinations on the suppression of Fusarium wilt in banana

Cited by 35 publications

References 41 publications

Redistribution of iron and hydrogen peroxide in Pinus sylvestris roots in response to trophically diverse fungi

Redistribution of iron and hydrogen peroxide in Pinus sylvestris roots in response to trophically diverse fungi

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Effects of soil nutrient availability and ozone on container-grown Japanese larch seedlings and role of soil microbes

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