The Effects of Soil Microbiomes on Preventing Nematode Damage to Rice Plants DOI Creative Commons

Kimsrong Uon,

Sourkea Sorn,

Stéphane Bellafiore

et al.

Published: Nov. 20, 2023

Meloidogyne graminicola (Mg), commonly referred to as rice root-knot nematodes (RKNs), is one of the most prevalent plant parasitic in agroecosystems, and sustainable agricultural practices are still limited. This study aimed assess effectiveness soil microbiotas extracted from different reducing RKN damage plants. We used conservation agriculture (CA), cover crops with machine tillage without (CAU), conventional (CT). All types were isolated samples collected each practice Preah Vihear Kampong Thom provinces Cambodia order test against Mg on plants (Variety IR64). The experiment was conducted tubes, using sterilized sand grow rice. Then, 250 juveniles (J2) infect tube classified into three treatments: (1) infected 25 mL microbiota suspensions non-sterilized (M); (2) (ST); (3) a control only J2 After 3 weeks infection, examined under microscopes measure number (J2 eggs). results showed that significantly treatment (ST) 230 ± 100.132 compared (M) 159 64.41, respectively. data demonstrated CA effective roots, method which can be biological lower However, further research required conduct assessment effects development yield determine taxa beneficial microbiomes benefit growth.

Language: Английский

Multicriteria assessment of recently implemented conservation agriculture cropping systems across farmers’ plots in northwestern Cambodia DOI Creative Commons

Sambo Pheap,

Alexis Thoumazeau, Jun Murase

et al.

Farming System, Journal Year: 2025, Volume and Issue: unknown, P. 100140 - 100140

Published: Feb. 1, 2025

Language: Английский

Citations

1
Amazonian deforestation and its influence on soil biotic factors and abiotic properties DOI
Tancredo Souza, Lucas Jónatan Rodrigues da Silva, Gislaine dos Santos Nascimento

et al.

Pedobiologia, Journal Year: 2023, Volume and Issue: 97-98, P. 150865 - 150865

Published: Feb. 24, 2023

Language: Английский

Citations

19
Symbiotic compatibility between rice cultivars and arbuscular mycorrhizal fungi genotypes affects rice growth and mycorrhiza-induced resistance DOI Creative Commons
Ludivine Guigard,

Léa Jobert,

Nicolas Busset

et al.

Frontiers in Plant Science, Journal Year: 2023, Volume and Issue: 14

Published: Oct. 24, 2023

Arbuscular mycorrhizal fungi (AMF) belong to the Glomeromycota clade and can form root symbioses with 80% of Angiosperms, including crops species such as wheat, maize rice. By increasing nutrient availability, uptake soil anchoring plants, AMF improve plant's growth tolerance abiotic stresses. also reduce symptoms pathogen load on infected both locally systemically, through a phenomenon called mycorrhiza induced resistance (MIR). There is scarce information rice mycorrhization, despite high potential this symbiosis in context sustainable water management production systems.We studied symbiotic compatibility (global mycorrhization & arbuscules intensity) MIR phenotypes between six cultivars from two subspecies (indica: IR64 Phka Rumduol; japonica: Nipponbare, Kitaake, Azucena Zhonghua 11) three genotypes (Funneliformis mosseae FR140 (FM), Rhizophagus irregularis DAOM197198 (RIR) R. intraradices FR121 (RIN)). The impact defence response Xanthomonas oryzae pv (Xoo) infection was recorded via phenotypic indexes marker gene expression studies.All colonise roots all varieties, clear differences efficiency depending combination under study (from 27% 84% for Rumduol-RIN Nipponbare-RIR combinations, respectively). Mycorrhization significantly (α=0.05) negative beneficial effects (impact dry weight ranging -21% 227% Azucena-FM Kitaake-RIN respectively), neutral extent Xoo leaves (except Azucena-RIN which showed 68% increase chlorosis). most compatible partner rice, colonisation intensity (84% Nipponbare's hyphal colonisation), (dry +28% (IR64) +178% (Kitaake)) decrease Xoo-induced (-6% (Nipponbare) -27% (IR64)). Transcriptomic analyses by RT-qPCR contrasting their association show different patterns several physiological genes.Overall, demonstrates adequate colonization, effectively restricting starvation mitigating phytopathogenic infection.

Language: Английский

Citations

11
Comparison of plant microbiota in diseased and healthy rice reveals methylobacteria as health signatures with biocontrol capabilities DOI Creative Commons

Kakada Oeum,

Malyna Suong,

Kimsrong Uon

et al.

Frontiers in Plant Science, Journal Year: 2024, Volume and Issue: 15

Published: Oct. 29, 2024

Introduction Rice ( Oryza sativa ) is a staple food worldwide, but its production under constant pressure from both abiotic and biotic stresses, resulting in high use of agrochemicals. The plant microbiome harbours microorganisms that can benefit health provide alternatives to the composition microbiomes depends on many factors (soil composition, age, health) considered primary driver future health. To identify protect against disease, we hypothesised asymptomatic rice plants fields pathogen (i.e., healthy islands among predominantly diseased plants) might harbour microbiota protects them disease. Material Methods We sampled leaf-diseased with disease incidence Cambodia profiled their at leaf, root, rhizosphere levels using 16S V3V4 18S V4 amplicon barcoding sequencing. Results Comparison sequence variants (ASV) samples revealed signatures (significant enrichment or depletion ASV/species/genus level) fields. genera Methylobacterium Methylorubrum were identified taxa several species significantly enriched leaf indicum , komagatae aerolatum rhodinum ). A cultivation approach led isolation bacterial strains these two genera, which further tested as bioinoculants leaves controlled conditions, showing for some significant reduction (up 77%) symptoms induced by Xanthomonas oryzae pv. infection. Discussion validated hypothesis occurrence host specific biocontrol capacities. This strategy could help new microbes potential sustainable production.

Language: Английский

Citations

4
History and progress in rice research and its future perspective in Cambodia DOI Creative Commons
Kazuki Saito,

Nurmi Pangesti,

Rica Joy Flor

et al.

Plant Production Science, Journal Year: 2025, Volume and Issue: unknown, P. 1 - 17

Published: Feb. 17, 2025

Since 1993, rice production in Cambodia has increased fivefold, positioning it as a key player global food security through its export contributions. Considerable expansion of harvested area and yield improvement have significantly boosted export. Yet, with an average 2.8 t/ha for rainfed lowland 4.1 irrigated lowland, there remains substantial gap, highlighting the potential further enhancements productivity. This study aims to provide current state cultivation Cambodia, challenges faces, history progress research, future research directions focusing on genetic agronomy. Despite significant advancements, such climate vulnerability, sub-optimum crop establishment, soil nutrient, pest management practices persist, particularly dominant systems. Rice varieties, fertilizer practices, control been instrumental addressing some challenges, yet ongoing is crucial developing solutions tailored Cambodia's unique agricultural landscape. Future efforts must concentrate climate-resilient varieties high market value, sustainable water farm diversification options fortify farming against change, thereby boosting productivity sustainability.

Language: Английский

Citations

0
Population ecology of entomopathogenic nematodes: Bridging past insights and future applications for sustainable agriculture DOI
Rubén Blanco-Pérez, Ernesto San‐Blas,

Monique J. Rivera

et al.

Journal of Invertebrate Pathology, Journal Year: 2025, Volume and Issue: unknown, P. 108313 - 108313

Published: March 1, 2025

Language: Английский

Citations

0
Rice Plants’ Resistance to Sheath Blight Infection Is Increased by the Synergistic Effects of Trichoderma Inoculation with SRI Management DOI Creative Commons
Febri Doni,

Anizan Isahak,

F. Fathurrahman

et al.

Agronomy, Journal Year: 2023, Volume and Issue: 13(3), P. 711 - 711

Published: Feb. 27, 2023

The capability of endophytic Trichoderma spp. to reduce sheath blight disease in rice caused by Rhizoctonia solani was assessed under the growth conditions established practices System Rice Intensification (SRI), compared those standard irrigated cultivation. seeds inoculated with a local isolate fungus asperellum SL2 were grown respective SRI and conventional or uninoculated plants then infected pathogen R. solani. It seen that inoculation this strain protected against infection while enhancing plant growth, photosynthetic rate, stomatal conductance. biocontrol effectiveness particular significantly greater management This is first report on how crop system, case, SRI, can influence

Language: Английский

Citations

10
Early effects of conservation agriculture on soil organic carbon dynamics of Mollisols in Cambodia DOI

Pengly Koun,

Pierre‐Antoine Vernet, Titouan Filloux

et al.

Soil Use and Management, Journal Year: 2023, Volume and Issue: 40(1)

Published: May 30, 2023

Abstract Cambodia has faced drastic agrarian changes over the last twenty years with a rapid and massive transformation of uplands from forest into arable land. Soil quality depletion is one main drivers resulting decline in crop productivity increasing production costs Battambang province. The objective study was to assess early effects conventional plough‐based (20 cm) management (CT) two conservation agriculture‐based (CA) cropping systems (the use single—CAS vs. multiple cover species—CAM) on maize monocropping system using three soil organic carbon (SOC) fractions Mollisols SOC content, permanganate oxidizable (POXC) CO 2 basal respiration through SituResp® were recorded at depth 0–10 cm. Twelve sampling periods used growth period crops during cycle. POXC highly sensitive practices with, across 12 periods, higher values ( p < .05) under CA than CT, an average increase 6% 20% 23%, respectively. No difference observed content between our periods. Seasonal variations both SituResp®. underwent larger fluctuations following critical weather events This showed that rapidly agricultural practices. are largely influenced by seasonality could help clarify impact patterns C dynamics.

Language: Английский

Citations

10
Land uses shifts the abundance and structure of soil biota and soil chemical traits in tropical ecosystem, Apodi Plateau, Brazil DOI
Joaquim Emanuel Fernandes Gondim, Tancredo Souza, Jeane Cruz Portela

et al.

Tropical Ecology, Journal Year: 2024, Volume and Issue: 65(2), P. 179 - 190

Published: Jan. 26, 2024

Language: Английский

Citations

3
Cover crop functional types alter soil nematode community composition and structure in dryland crop-fallow rotations DOI Creative Commons
Ismail Ibrahim Garba, G. R. Stirling,

A. M. Stirling

et al.

Applied Soil Ecology, Journal Year: 2023, Volume and Issue: 194, P. 105196 - 105196

Published: Nov. 16, 2023

Increasing dryland cropping intensity by integrating cover crops into crop-fallow rotations can add diversity and alter soil ecosystem functions, including improvements in nutrient water retention cycling, suppression of soil-borne pests. However, the use also carry risk increasing abundance plant-parasitic nematodes that could undermine system productivity. Here, we examined how integration diverse different functional groups: Poaceae [forage oat (Avena sativa L.)]; Brassicaceae rape (Brassica napus Fabaceae [common vetch (Vicia subsp. L. fababean faba L.) monocultures mixtures a rotation altered nematode community composition structure relative to conventional fallows. We found crop had greater complexity free-living nematodes, indicating enhanced cycling energy nutrients (enrichment index >50 %) compared monocultures. Furthermore, using structural equation modelling approach, showed is driven primarily residue quality (C:N ratio, cellulose content) marginally quantity (biomass). The grass-legume mixture highest (Pratylenchus neglectus Merlinius brevidens) but fostered robust food webs with complex trophic interactions, promotion functions related N C overall improvement health. results indicate bottom-up effects on communities are modulated type composition. Consequently, appropriate traits must be selected if health improved via enhancement web complexity.

Language: Английский

Citations

9