Induction of Systemic Resistance in Tomato Plants against Root-Knot Nematode, Meloidogyne incognita (Passe-Muraille) with β, Amino Butyric Acid

2019 ◽  
Vol 10 (11) ◽  
pp. 497-503
Author(s):  
M. M. R. Attia
Keyword(s):  
Butyric Acid ◽  
Meloidogyne Incognita ◽  
Systemic Resistance ◽  
Root Knot Nematode ◽  
Tomato Plants ◽  
Amino Butyric Acid

Light-induced systemic resistance in tomato plants against root-knot nematode Meloidogyne incognita

2014 ◽  
Vol 76 (2) ◽  
pp. 167-175 ◽  
Author(s):  
You-Xin Yang ◽  
Meng-Meng Wang ◽  
Yan Ren ◽  
Eugen Onac ◽  
Guofu Zhou ◽  
...  
Keyword(s):  
Meloidogyne Incognita ◽  
Induced Systemic Resistance ◽  
Systemic Resistance ◽  
Root Knot Nematode ◽  
Tomato Plants

scholarly journals Systemically Induced Resistance and Microbial Competitive Exclusion: Implications on Biological Control

2012 ◽  
Vol 102 (3) ◽  
pp. 260-266 ◽  
Author(s):  
A. Martinuz ◽  
A. Schouten ◽  
R. A. Sikora
Keyword(s):  
Meloidogyne Incognita ◽  
Defense Mechanisms ◽  
Root Colonization ◽  
Competitive Exclusion ◽  
Spatial Separation ◽  
Agricultural Pests ◽  
Root Knot Nematode ◽  
Tomato Plants ◽  
Split Root ◽  
Induce Resistance

The root-knot nematode, Meloidogyne incognita, is among the most damaging agricultural pests, particularly to tomato. The mutualistic endophytes Fusarium oxysporum strain Fo162 (Fo162) and Rhizobium etli strain G12 (G12) have been shown to systemically induce resistance toward M. incognita. By using triple-split-root tomato plants, spatially separated but simultaneous inoculation of both endophytes did not lead to additive reductions in M. incognita infection. More importantly, spatially separated inoculation of Fo162 and G12 led to a reduction in Fo162 root colonization of 35 and 39% when G12 was inoculated on a separate root section of the same plant in two independent experiments. In an additional split-root experiment, spatial separation of Fo162 and G12 resulted in a reduction of Fo162 root colonization of approximately 50% over the water controls in two independent experiments. The results suggested that the suppressive activity of G12 on Fo162 and M. incognita is possibly related to the induction of specific plant defense mechanisms. Thus, although Fo162 and G12 have the ability to systemically repress M. incognita infection in tomato, they can be considered incompatible biocontrol agents when both organisms are present simultaneously on the same root system.

Comparison of host recognition, invasion, development and reproduction of Meloidogyne graminicola and M. incognita on rice and tomato

Nematology ◽  
2011 ◽  
Vol 13 (5) ◽  
pp. 509-520 ◽  
Author(s):  
Tushar K. Dutta ◽  
Stephen J. Powers ◽  
Brian R. Kerry ◽  
Hari S. Gaur ◽  
Rosane H.C. Curtis
Keyword(s):  
Meloidogyne Incognita ◽  
Host Recognition ◽  
Cortical Region ◽  
Root Knot Nematode ◽  
Root Tips ◽  
Root Knot Nematodes ◽  
Tomato Plants ◽  
Meloidogyne Graminicola ◽  
Second Stage ◽  
Tomato Roots

AbstractThe rice root-knot nematode Meloidogyne graminicola normally infects rice, wheat and several other graminaceous plants. Meloidogyne incognita is a serious pest of dicotyledonous crops, although it can infect and reproduce on some cereals. This paper demonstrates and compares host recognition, development and reproduction of these two species of root-knot nematodes on rice and tomato plants. Attraction bioassays in pluronic gel clearly showed that M. incognita preferred tomato roots to rice or mustard roots, whilst M. graminicola was more attracted towards rice compared with tomato or mustard roots. Based on the attraction data from this study, it can be hypothesised that either: i) the blend of attractants and repellents are different in good and poor hosts; or ii) relatively long-range attractants, together with shorter-range repellents, might affect nematode movement patterns. Some host specific attractants might also be involved. Meloidogyne incognita was able to invade and develop to adult female but did not produce eggs in rice roots. By contrast, M. graminicola developed and reproduced faster on both rice and tomato plants compared with M. incognita. Nevertheless, second-stage juveniles of both these root-knot nematodes showed a similar pattern of distribution inside the roots, preferring to accumulate at the root tips of rice or in the vascular cylinder and cortical region of tomato.

scholarly journals Local and Systemic Induced Resistance to the Root-Knot Nematode in Tomato by DL-β-Amino-n-Butyric Acid

1999 ◽  
Vol 89 (12) ◽  
pp. 1138-1143 ◽  
Author(s):  
Yuji Oka ◽  
Yigal Cohen ◽  
Yitzhak Spiegel
Keyword(s):  
Butyric Acid ◽  
Foliar Spray ◽  
Giant Cells ◽  
Root Knot Nematode ◽  
Root Knot Nematodes ◽  
Tomato Plants ◽  
Feeding Site ◽  
Chemical Inducers ◽  
Site Development ◽  
Tomato Roots

Chemical inducers of pathogenesis-related proteins and plant resistance were applied to tomato plants, with the aim of inducing resistance to the root-knot nematode Meloidogyne javanica. Relative to control plants, foliar spray and soil-drenching with dl-β-amino-n-butyric acid (BABA) reduced root-galling 7 days after inoculation, as well as the number of eggs 30 days after inoculation. Other chemicals (α- and γ-amino-n-butyric acid, jasmonic acid, methyl jasmonate, and salicylic acid) were either phytotoxic to tomato plants or did not improve control of root-knot nematodes. Fewer second-stage juveniles invaded BABA-treated tomato roots, and root-galling indices were lower than in control tomato plants. Resistance phenomena in seedlings lasted at least 5 days after spraying with BABA. Nematodes invading the roots of BABA-treated seedlings induced small, vacuolate giant cells. Postinfection treatment of tomato plants with BABA inhibited nematode development. It is speculated that after BABA application tomato roots become less attractive to root-knot nematodes, physically harder to invade, or some substance(s) inhibiting nematode or nematode feeding-site development is produced in roots.

scholarly journals INFLUENCE OF FOLIAR TREATMENTS OF TOMATO PLANTS WITH MICROELEMENTS ON ROOT-KNOT NEMATODE INFESTATION

2021 ◽  
pp. 520-525
Author(s):  
Udalova ◽  
Zinovieva
Keyword(s):  
Photosynthetic Pigments ◽  
Meloidogyne Incognita ◽  
Growth And Development ◽  
Metabolic Effect ◽  
Plant Tissues ◽  
Pathological State ◽  
Qualitative Composition ◽  
Root Knot Nematode ◽  
Tomato Plants ◽  
Susceptible Tomato

Selenium (Se), silicon (Si) and nickel (Ni) are essential microelements in plants. Their deficiency can have a significant impact on the growth and development of plants, and on nematode infestation. The study of the possibility of regulating the interaction of plants with root-knot nematode by means of exogenous foliar treatments with solutions of nanosized Se, Si and Ni has been conducted. Susceptible tomato plants were treated in the seed phase and the growing plants were sprayed with aqueous solutions of nanosized microelements (Se – 0.6; Ni – 0.1; Si – 2 mg/l). The influence of treatments on the infestation of tomatoes by the root-knot nematode Meloidogyne incognita, as well as on the development of plants and the quantitative and qualitative composition of photosynthetic pigments, as the most sensitive indicator of the pathological state of plants, was studied. A decrease in the infestation of tomatoes with a nematode in the Se<Si<Ni series is shown. The treated plants were dominated by larvae. An increase in the entire pool of photosynthetic pigments or individual pigments was observed when treated with nanosized microelements. The greatest effect on the infestation of the root system, the development of nematodes and the content of photosynthetic pigments was obtained when plants were treated with nanosized nickel. It is obvious that these elements have an individual metabolic effect on plant tissues, but it is obvious that they have a beneficial effect on tomato plants, which allows us to consider them as inductors that increase resistance to root-knot nematode.

scholarly journals POTENSI BAKTERI ENDOFIT MENGINDUKSI KETAHANAN TANAMAN LADA TERHADAP INFEKSI Meloidogyne incognita

2020 ◽  
Vol 17 (3) ◽  
pp. 118 ◽  
Author(s):  
RITA HARNI ◽  
MEYNARTI SARI DEWI IBRAHIM
Keyword(s):  
Root System ◽  
Meloidogyne Incognita ◽  
Endophytic Bacteria ◽  
Black Pepper ◽  
Systemic Resistance ◽  
Piper Nigrum ◽  
Control Methods ◽  
Root Knot Nematode ◽  
Split Root ◽  
Split Root System

<p>ABSTRAK</p><p>Meloidogyne incognita, merupakan salah satu organisme peng-ganggu (OPT) penyebab penyakit kuning pada tanaman lada dan dapatmengakibatkan penurunan hasil sampai 32%. Beberapa teknik untukmengendalikan patogen ini telah dilakukan tetapi belum memberikan hasilyang memuaskan. Pengendalian biologi dengan menggunakan bakteriendofit merupakan salah satu alternatif pengendalian yang cukup men-janjikan untuk dapat mengatasi permasalahan nematoda penyakit tanaman.Penelitian ini telah dilakukan di Laboratorium Bakteriologi danNematologi Departemen Proteksi Tanaman Institut Pertanian Bogor, danRumah Kaca Balai Penelitian Tanaman Rempah dan Aneka TanamanIndustri Pakuwon Sukabumi dari bulan Mei sampai November 2009.Kegiatan yang dilakukan adalah: 1) Seleksi beberapa isolat bakteri endofituntuk mengendalikan nematoda M. incognita pada tanaman lada dan 2)Potensi induced systemic resistance (ISR) dan analisis asam salisilat sertaperoksidase. Isolat bakteri endofit yang digunakan adalah isolat bakteriendofit potensial yang diisolasi dari akar nilam. Akar tanaman ladadirendam dalam suspensi bakteri endofit, selanjutnya diinokulasi dengan500 ekor larva 2 M. incognita. Sebulan setelah inokulasi tanamandibongkar diamati populasi nematoda dan pertumbuhan tanaman. AnalisisISR dilakukan dengan metode split root system dilanjutkan dengananalisis kadar asam salisilat dan peroksidase. Penelitian mengunakanRancangan Acak Lengkap. Hasil penelitian menunjukkan bahwa bakteriendofit dapat menekan jumlah puru dan populasi nematoda di dalam akar.Penekanan tertinggi pada isolat MSK (97,93%) tidak berbeda nyatadengan isolat BAS, TT2, dan NJ46 yaitu 97,35; 95,22; dan 92,14%.Berdasarkan analisis split root system, ke 4 isolat tersebut dapat meng-induksi ketahanan tanaman lada secara sistemik dengan mekanismepeningkatan kandungan asam salisilat dan peroksidase di dalam akar.</p><p>Kata kunci : Bakteri endofit, penyakit kuning, Piper nigrum L.,Meloidogyne incognita, induksi ketahanan</p><p>ABSTRACT</p><p>The use of endophytic bacteria to induce plant resistanceagainst infection of root-knot nematode (Meloidogyneincognita) on black pepper</p><p>Root-knot nematode (Meloidogyne incognita) is one of important patho-gens causing yellow disease on black pepper. As a result of this pathogenattack can lower the results up to 32%. Several control methods have beendone successful to control pathogen. Biological control using endophyticbacteria is one of prospective alternative control methods to overcomenematode problem. The research had been conducted in the Laboratory ofBacteriology and Nematology Department of Plant Protection, BogorAgricultural University (IPB) and in greenhouse of Indonesian Spices andIndustrial Crops Research Institute (ISICRI) Sukabumi. The objectives ofthis study were : 1) Selection of endophytic bacteria to control M.incognita nematodes on black pepper and 2) Potential of induced systemicresistance (ISR) and analysis of salicylic acid and peroxidase. Endophyticbacterial isolates used were endophytic potential bacterial isolates isolatedfrom the roots of patchouli. Pepper plant roots were soaked in anendophytic bacterial suspension, then inoculated with 500 larvae of 2 M.incognita. A month after inoculation, the plants were dismantled andobserved population of nematodes and plant growth. ISR analysis wasperformed by the method of split root system followed by analysis ofsalicylic acid and peroxidase contents. The research was arranged usingCompletely Randomized Design. The results showed that endophyticbacteria were able to suppress the amount of gall and nematode populationin roots. The highest suppression was on MSK isolate (97.93%) which wasnot significantly different from BAS, TT2, and NJ46 isolates, namely97.35, 95.22, and 92.14%, respectively. The analysis of split root systemshowed that the 4 isolates were able to induce systemic resistance of blackpepper with a mechanism of increase in salicylic acid and peroxidasecontents in roots.</p><p>Key words : Endophytic bacteria, yellow disease, Piper nigrum L.,Meloidogyne incognita, induce systemic resistance</p>

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