Influences of a root-lesion nematode, Pratylenchus coffeae, and two arbuscular mycorrhizal fungi, Acaulospora mellea and Glomus clarum on coffee (Coffea arabica L.)

1997 ◽  
Vol 26 (2) ◽  
pp. 130-135 ◽  
Author(s):  
P. Vaast ◽  
E. P. Caswell-Chen ◽  
R. J. Zasoski

Mycorrhiza ◽  
2021 ◽  
Vol 31 (5) ◽  
pp. 613-623
Author(s):  
Monique Thiara Rodrigues e Silva ◽  
Angélica Calandrelli ◽  
Angélica Miamoto ◽  
Luanna Karoline Rinaldi ◽  
Beatriz Pereira Moreno ◽  
...  


2020 ◽  
Vol 44 ◽  
Author(s):  
Arley José Fonseca ◽  
Guilherme Augusto Teixeira Tassone ◽  
Marco Aurélio Carbone Carneiro ◽  
Gladyston Rodrigues Carvalho ◽  
Carlos Henrique Siqueira Carvalho ◽  
...  

ABSTRACT The production of Coffea arabica L. clone seedlings through the somatic embryogenesis technique is one of the alternatives of greatest demand for coffee producers. However, clones can face difficulties related to acclimatization carried out under greenhouse conditions, which can increase the production costs. A tested alternative with promising results is inoculation with arbuscular mycorrhizal fungi (AMF) during the seedling acclimatization process. Thus, this study aimed to promote the improvement of the seedling production process through somatic embryogenesis associated with inoculation with AMF. For the production of the clones, seedlings were used in the phase when they presented four pairs of leaves (Clone 1 “Fruiting red Catucaí” and Clone 2 “Acauã”), using “somatic embryogenesis” bioreactors, followed by inoculation with Rhizophagus clarus, Gigaspora margarita and Acaulospora mellea, a mixture of R. clarus and G. margarita and a mixture of R. clarus, G. margarita and A. mellea. After six months, agronomic parameters, leaf nutrient contents and root mycorrhizal colonization were evaluated. The studied clones behaved differently when inoculated with AMFs. Clone 1 showed the best development in the greenhouse, which was determined by the agronomic parameters. Thus, Clone 1 is indicated for the production of vigorous seedlings when associated with inoculation with AMFs.



Afrika Focus ◽  
2013 ◽  
Vol 26 (2) ◽  
Author(s):  
Tadesse Chanie Sewnet ◽  
Fassil Assefa Tuju

In a first step to understand the interactions between Coffea arabica L. trees and mycorrhizae in Ethiopia, an investigation of the current mycorrhizal colonization status of roots was undertaken. We sampled 14 shade tree species occurring in coffee populations in Bonga forest, Ethiopia. Milletia ferruginea, Scheffiera abyssinica, Croton macrostachyus, Ficus vasta, F. sur, Albizia gummifera, Olea capensis, Cordia africana, Ehretia abyssinica, Pouteria adolfi-friederici, Pavetta oliveriana, Prunus africana, Phoenix reclinata and Polyscias fulva. Coffee trees sampled under each shade tree were all shown to be colonized by arbuscular mycorrhizal fungi (AM fungi). Four genera and 9 different species of AM fungi were found in the soils. Glomus (Sp1, Sp2, & Sp3 & Sp4), Scutellospora (Sp1 & Sp2) and Gigaspora (Sp1 & Sp2) were found under all 14 shade tree species, whereas Acaulospora (Sp1) occurred only in slightly acidic soils, within a pH range of 4.93-5.75. Generally, roots of the coffee trees were colonized by arbuscules to a greater degree than those of their shade trees, the arbuscular colonization percentage (AC%) of the former being higher than the latter (signifIcant difference at 0.05 level). Though differences were not statistically signifIcant, the overall hyphal colonization percentage (HC%) and mycorrhizal hyphal colonization percentage (MHC%) were shown to be slightly higher under coffee trees than under their shade trees. However, the differences were statistically significant at 0.05 level in the case of HC% values of coffee trees under Pouteria adolf-friederici and MHC% under Cordia africana. Spore density and all types of proportional root colonization parameters (HC%, MHC%, AC% and vesicular colonization percentage, VC%) for both coffee and shade trees were negatively and significantly correlated with organic soil carbon, total N, available P, EC and Zn. Correlation between arbuscular colonization for coffee (AC%) and organic carbon was not significantly positive at a 0.05 level. Incidence of specific spore morphotypes was also correlated with physical and chemical soil properties. Results indicate that AM fungi could potentially be important in aforestation and help to promote coffee production activities in Ethiopia providing an alternative to expensive chemical fertilizer use, and would offer management methods that take advantage of natural systems dynamics that could potentially preserve and enhance coffee production. Key words: aforestation; agroforestry, coffee groves, ecology, integrated production systems, rhizosphere, sustainable agriculture, symbiosis 



2013 ◽  
Vol 64 (1) ◽  
pp. 4888 ◽  
Author(s):  
AHNA Al-Arequi ◽  
M Chliyeh ◽  
F Sghir ◽  
A Ouazzani Touhami ◽  
R Benkirane ◽  
...  


2019 ◽  
Vol 32 (2) ◽  
pp. 370-380
Author(s):  
EDUARDO MENDONÇA PINHEIRO ◽  
CAMILA PINHEIRO NOBRE ◽  
THAYANNA VIEIRA COSTA ◽  
ORLANDO CARLOS HUERTAS TAVARES ◽  
JOSÉ RIBAMAR GUSMÃO ARAUJO

ABSTRACT The use of beneficial microorganisms such as arbuscular mycorrhizal fungi (AMF) may favor both the growth phase and the stabilization of the seedlings after transplantation. The aim of this study was to evaluate the effect of inoculation of different AMF species on the development of Barbados cherry seedlings from herbaceous and semi-hardwood cuttings. Softwood and semi-hardwood cuttings, previously rooted, were planted in 500 ml tubes filled with Plantmax® substrate and inoculated with three species of mycorrhizal fungi (Gigaspora margarita - Gimarg, Claroideoglomus etunicatum - Claetun and Glomus clarum - Glclar) isolated and combined (Gimarg + Claetun, Gimarg + Glclar, Claetun + Glclar and Gimarg + Claetun + Glclar). The statistical design was completely randomized in factorial scheme 2 x 8 (two types of cuttings and eight types of inoculation, including control without AMF inoculation) with ten replications. The seedlings were kept in a greenhouse for 100 days and height was measured every 15 days to determine the absolute and relative growth rate (AGR and RGR). At the end of the experiment the seedlings were sacrificed and determined height, fresh and dry shoot mass and root and mycorrhizal colonization rate. The results indicate potential for production of Malpighia emarginata D.C. seedlings inoculated with AMF with tendency to reduce the time for transplanting. The Gimarg + Claetun combination promoted higher rates of absolute growth and height of seedlings from herbaceous cuttings. The species Glomus clarum, isolated or associated with C. etunicatum, promoted higher colonization rates in herbaceous and semi-hardwood seedlings, respectively.



Jurnal Agro ◽  
10.15575/1813 ◽  
2018 ◽  
Vol 5 (1) ◽  
pp. 61-65
Author(s):  
Lia Sugiarti ◽  
Yana Taryana

Fungi Mikoriza Arbuskular (FMA) banyak ditemukan pada perakaran kopi. Tujuan dari percobaan ini untuk mempelajari pengaruh pemberian takaran FMA terhadap pertumbuhan bibit kopi Arabika (Coffea arabica L). Percobaan dilaksanakan dari bulan Mei sampai dengan bulan Agustus 2017, bertempat di Kebun Percobaan Fakultas Pertanian Universitas Winaya Mukti, Tanjungsari, Sumedang, dengan ketinggian tempat 850 m dpl. Rancangan yang digunakan dalam penelitian ini adalah Rancangan Acak Kelompok (RAK) terdiri atas enam perlakuan dan diulang sebanyak empat kali.  Perlakuan takaran FMA jenis Glomus agregatum yang terdiri dari A = 0  g tan-1; B = 10 g tan -1; C = 20 g tan-1; D = 30 g tan-1; E = 40 g tan-; dan F = 50 g tan-1. Hasil percobaan menunjukkan bahwa pemberian takaran inokulasi FMA  berpengaruh terhadap tinggi tanaman dan bobot kering tanaman. Pemberian takaran inokulasi FMA dengan takaran 40 g tan-1- sampai 50 g tan-1 memberikan pengaruh yang terbaik terhadap tinggi tanaman dan bobot kering tanaman. Dengan demikian pemberian FMA 40 g tan-1- sampai 50 g tan-1 dapat digunakan pada pembibitan kopi arabika. Arbuscular Mycorrhizal Fungi (AMF) is commonly found in coffee roots.  The purpose of the research was to study effect of AMF application on growth of arabica coffee seedling (Coffea arabica L). The research was conducted from May to August 2017, at Research Station of Agriculture Faculty Universitas Winaya Mukti, Tanjungsari Sumedang, at 850 m above sea levels. The research used Randomized Block Design (RBD) consisted of six treatments and four replications. The treatment was dosage of AMF from Glomus agregatum type i.e. : A = 0 g plant-1; B = 10 g  plant-1; C = 20 g plant-1; D = 30 g plant-1; E = 40 g plant-1; F = 50 g plant-1. Each plot consisted of 10 polybag with 4 sample plants. The research result showed that application of AMF affected on plant height and dry weight of plant, which the best effect was generated by 40 g plant-1- until 50 g plant-1 dosages . It is simply that AMF 40 g plant-1 - 50 g plant-1  can be used in arabica coffee nursery.





2020 ◽  
Vol 15 ◽  
pp. 1-8
Author(s):  
Rafaele de Sousa Cruz ◽  
Fausto Henrique Vieira Araújo ◽  
André Cabral França ◽  
Levy Tadin Sardinha ◽  
Caroline Maira Miranda Machado


1998 ◽  
Vol 78 (3) ◽  
pp. 481-484 ◽  
Author(s):  
Lisette J. C. Xavier ◽  
James J. Germida

The dependency of four spring wheat cultivars (Triticum aestivum L.) Laura, Columbus, Neepawa and Katepwa on Glomus clarum NT4 in a P-deficient soil containing indigenous arbuscular mycorrhizal fungi (AMF) was assessed in a growth chamber. The wheat cultivars were grown with or without 1.5 g of a monospecific culture of Glomus clarum NT4 for 95 d. The NT4 inoculant had no significant (P < 0.05) impact on the growth or grain yield of Laura or Neepawa, but increased that of Columbus and reduced that of Katepwa. The shoot P or N concentration, or the shoot P use efficiency (PUE) was not affected by AMF inoculation. However, the grain P concentration of Laura was significantly (P < 0.05) greater in the NT4-inoculated plants compared with the control. Increases in the shoot and grain yield of NT4inoculated Columbus were associated with a significant (P < 0.05) increase in the grain PUE of the plants. The % AMF-colonized root was significantly higher in NT4-inoculated Laura, Columbus and Neepawa, but there was no effect on Katepwa. The dependency of the cultivar Columbus on AMF was apparently greater in this soil compared with the other cultivars. These results suggest that the four wheat cultivars not only varied in their susceptibility to AMF colonization, but also in their ability to exploit the rhizosphere AMF community which reflected on plant yield. Key words: Wheat cultivars, Glomus clarum NT4, AMF-cultivar interactions



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