Evaluation of organic amendments from agro‐industry waste for the control of verticillium wilt of olive

The olive tree (Olea europaea L.) is an emblematic, long-living fruit tree species of profound economic and environmental importance. This study is a literature review of articles published during the last 10 years about the role of beneficial microbes [Arbuscular Mycorrhizal Fungi (AMF), Plant Growth Promoting Rhizobacteria (PGPR), Plant Growth Promoting Fungi (PGPF), and Endophytes] on olive tree plant growth and productivity, pathogen control, and alleviation from abiotic stress. The majority of the studies examined the AMF effect using mostly Rhizophagus irregularis and Glomus mosseae species. These AMF species stimulate the root growth improving the resistance of olive plants to environmental and transplantation stresses. Among the PGPR, the nitrogen-fixing bacteria Azospirillum sp. and potassium- and phosphorous-solubilizing Bacillus sp. species were studied extensively. These PGPR species were combined with proper cultural practices and improved considerably olive plant’s growth. The endophytic bacterial species Pseudomonas fluorescens and Bacillus sp., as well as the fungal species Trichoderma sp. were identified as the most effective biocontrol agents against olive tree diseases (e.g., Verticillium wilt, root rot, and anthracnose).

Section: Beneficial Microorganisms Against Pathogensmentioning

confidence: 99%

The Role of Microbial Inoculants on Plant Protection, Growth Stimulation, and Crop Productivity of the Olive Tree (Olea europea L.)

Bizos

Papatheodorou

Chatzistathis³

et al. 2020

“…They are applied as natural fertilizers, contributing to reducing heavy inputs of synthetic agrochemicals, thereby minimizing residues originating from farming activity. Despite the numerous advantages of OM, their use in controlling VWO has not been frequently reported, although some examples are available [145,146]. Recently, the ability to reduce the mycelial growth and MS viability of V. dahliae by five OM from olive oil waste compost, cow manure, vermicompost and two commercial compost teas, and combinations among them, was evaluated [145].…”

Section: Organic Amendments: a Second Life For Agricultural Waste To mentioning

confidence: 99%

“…Despite the numerous advantages of OM, their use in controlling VWO has not been frequently reported, although some examples are available [145,146]. Recently, the ability to reduce the mycelial growth and MS viability of V. dahliae by five OM from olive oil waste compost, cow manure, vermicompost and two commercial compost teas, and combinations among them, was evaluated [145]. Results showed that the application of OM, especially solid olive oil waste compost and compost tea, inhibited or reduced the viability of V. dahliae MS in soil as well as the disease incidence in olive plants.…”

Section: Organic Amendments: a Second Life For Agricultural Waste To mentioning

confidence: 99%

“…The effectiveness of OM is sometimes a consequence of synergies with other substances or microorganisms, resulting in much better results compared with those obtained when the OM is used alone [ 148 ]. For instance, the addition of lactic acid to the solid olive oil waste compost provided a consistent reduction in MS viability [ 145 ]. In other cases, the effectiveness of the OM is determined by the addition of a particular microorganism.…”

Section: Advances In the Management Of Verticillium Wilt Of Olivementioning

confidence: 99%

See 1 more Smart Citation

Verticillium Wilt of Olive and Its Control: What Did We Learn during the Last Decade?

Montes-Osuna

Mercado‐Blanco

2020

Verticillium (Verticillium dahliae Kleb.) wilt is one of the most devastating diseases affecting olive (Olea europaea L. subsp. europaea var. europaea) cultivation. Its effective control strongly relies on integrated management strategies. Olive cultivation systems are experiencing important changes (e.g., high-density orchards, etc.) aiming at improving productivity. The impact of these changes on soil biology and the incidence/severity of olive pests and diseases has not yet been sufficiently evaluated. A comprehensive understanding of the biology of the pathogen and its populations, the epidemiological factors contributing to exacerbating the disease, the underlying mechanisms of tolerance/resistance, and the involvement of the olive-associated microbiota in the tree’s health is needed. This knowledge will be instrumental to developing more effective control measures to confront the disease in regions where the pathogen is present, or to exclude it from V. dahliae-free areas. This review compiles the most recent advances achieved to understand the olive–V. dahliae interaction as well as measures to control the disease. Aspects such as the molecular basis of the host–pathogen interaction, the identification of new biocontrol agents, the implementation of “-omics” approaches to unravel the basis of disease tolerance, and the utilization of remote sensing technology for the early detection of pathogen attacks are highlighted.

“…The following are available online at , Table S1: Disease compatibility of specific combinations of race-specific secreted effectors (Ave1 and V2) on resistant cultivars of tomatoes containing different combinations of the race 1 (Ve1) and race 2 (V2) resistance phenotypes, Table S2: Biocontrol agents (BCAs) and biologicals with biocontrol activity against Verticillium dahliae , Table S3: Some examples of organic amendments (OAs) with suppressiveness against Verticillium dahliae , Table S4: Examples of sources of carbon from recent studies for anaerobic soil disinfestation of soil-borne pathogens including Verticillium dahliae . References [ 137 , 140 , 153 , 154 , 155 , 156 , 157 , 158 , 159 , 160 , 161 , 163 , 164 , 166 , 167 , 169 , 174 , 175 , 224 , 249 , 250 , 251 , 252 , 253 , 254 , 255 , 256 , 257 , 258 , 259 , 260 , 261 , 262 , 263 , 264 , 265 , 266 , 267 , 268 , 269 , 270 , 271 , 272 , 273 , 274 , 275 ...…”

mentioning

confidence: 99%

Opportunities and Challenges in Studies of Host-Pathogen Interactions and Management of Verticillium dahliae in Tomatoes

Acharya

Ingram

et al. 2020

Tomatoes (Solanum lycopersicum L.) are a valuable horticultural crop that are grown and consumed worldwide. Optimal production is hindered by several factors, among which Verticillium dahliae, the cause of Verticillium wilt, is considered a major biological constraint in temperate production regions. V. dahliae is difficult to mitigate because it is a vascular pathogen, has a broad host range and worldwide distribution, and can persist in soil for years. Understanding pathogen virulence and genetic diversity, host resistance, and plant-pathogen interactions could ultimately inform the development of integrated strategies to manage the disease. In recent years, considerable research has focused on providing new insights into these processes, as well as the development and integration of environment-friendly management approaches. Here, we discuss the current knowledge on the race and population structure of V. dahliae, including pathogenicity factors, host genes, proteins, enzymes involved in defense, and the emergent management strategies and future research directions for managing Verticillium wilt in tomatoes.