Biological Control最新文献

{"title":"The novel Pseudomonas thivervalensis strain JI6 promotes growth and controls rusty root rot disease in Panax ginseng","authors":"Tingting Liu ,&nbsp;Jinying Zhang ,&nbsp;Tong Wang ,&nbsp;Zongyan Li ,&nbsp;Huijie Liang ,&nbsp;Chengyang Jiang ,&nbsp;Hao Tang ,&nbsp;Jie Gao ,&nbsp;Yun Jiang ,&nbsp;Changqing Chen","doi":"10.1016/j.biocontrol.2024.105514","DOIUrl":"10.1016/j.biocontrol.2024.105514","url":null,"abstract":"<div><p>The bacterial strain JI6, which has plant growth-promoting characteristics, was isolated from ginseng rhizosphere soil. It can produce indoleacetic acid (IAA), dissolve phosphorus, dissolve potassium and fix nitrogen and significantly promoted the growth of ginseng. The strain was identified as <em>Pseudomonas thivervalensis</em> by morphological, physiological and biochemical characteristics and 16S rDNA sequence analysis. The bud length of ginseng seeds treated with 10⁹ CFU/mL JI6 suspension increased significantly by 42.76 % after 15 days. The fresh weight and the ginsenoside content of 3-year-old ginseng roots significantly increased by 38.72 % and 24.20 %, respectively with the 10⁸ CFU/mL JI6 suspension for five months in the field. The strain JI6 can inhibit the six fungal pathogens and control rusty root rot of ginseng. For the biocontrol mechanism, the strain JI6 can colonize in ginseng rhizosphere soil. After treatment with JI6, the activitie of five ginseng defence enzymes of β-1.3 glucanase, peroxidase and phenylalanine ammonia-lyase, chitinase and superoxide dismutase and four soil enzymes of urease, phosphatase, invertase, and catalase significantly increased. The effect of strain JI6 on soil microbial community showed that the microbial diversity increased and the abundance of beneficial microorganisms elevated, while the abundance of pathogenic microorganisms decreased. This study indicate the great potential of <em>P. thivervalensis</em> JI6 for use as a biological agent for the control of ginseng rusty root rot.</p></div>","PeriodicalId":8880,"journal":{"name":"Biological Control","volume":"193 ","pages":"Article 105514"},"PeriodicalIF":4.2,"publicationDate":"2024-04-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S1049964424000793/pdfft?md5=7279e445e0b8e4119c2eafa4684fa547&pid=1-s2.0-S1049964424000793-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140781908","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Evaluating the influence of plant defenses on prey quality as an opportunity to enhance biological control in agroecosystems","authors":"Victoria M. Pocius ,&nbsp;Mônica F. Kersch-Becker","doi":"10.1016/j.biocontrol.2024.105515","DOIUrl":"10.1016/j.biocontrol.2024.105515","url":null,"abstract":"<div><p>To ensure sustainable food production within agroecosystems, effective pest control is of utmost importance. One critical component of integrated pest management is biological control. The attraction, retention, and persistence of natural enemies within cropping systems are key factors for the success and effectiveness of biological control. Despite great efforts to attract and augment natural enemies in agroecosystems, little is known about the retention and persistence of their populations after they arrive at a crop field. Plant defensive traits play a critical role in shaping herbivore population dynamics, yet their impact on the structure of carnivorous arthropod communities and their contribution in boosting the success of biological control efforts remains understudied. Here, we discuss the role of plant defenses in retaining natural enemy communities by influencing the quality of herbivorous pests as prey for their natural enemies. These bottom-up effects of host-plant defenses on prey quality are often overlooked in the development of pest management strategies. However, these effects could serve as the foundation for novel applications of plant defenses in pest management.</p></div>","PeriodicalId":8880,"journal":{"name":"Biological Control","volume":"193 ","pages":"Article 105515"},"PeriodicalIF":4.2,"publicationDate":"2024-04-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S104996442400080X/pdfft?md5=7b65b98e3360a5dfb5ffe20287312f38&pid=1-s2.0-S104996442400080X-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140788569","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Volatile chemical cues emitted by an agricultural companion plant (Cnidium monnieri) attract predatory lacewings (Chrysoperla sinica)","authors":"Shuyang Huang ,&nbsp;Wenhui Zhang ,&nbsp;Yunhe Zhang ,&nbsp;Hengqiu Jia ,&nbsp;Xiaoxiao Zhang ,&nbsp;Haiqiang Li ,&nbsp;Jianping Zhang ,&nbsp;Feng Ge ,&nbsp;Zhiping Cai","doi":"10.1016/j.biocontrol.2024.105516","DOIUrl":"https://doi.org/10.1016/j.biocontrol.2024.105516","url":null,"abstract":"<div><p>Plant volatiles play an important role in the recruitment of arthropod natural enemies and are widely used in foraging by many species. Therefore, identification of plants that release useful volatile organic compounds (VOCs) for influencing natural enemies and for the control of pests can be helpful in conservation biological control. <em>Cnidium monnieri</em> (L.) can convene many predatory enemies (lady beetles, hoverflies, lacewings) as a functional plant. The <em>Chrysoperla sinica</em> (Tjeder) is a dominant generalist predator, and can control the population of various pests in agricultural fields. However, how <em>C. monnier</em> recruits <em>C. sinica</em> and the chemical association between them is unknown. In this study, we tested the attractiveness of odor released by flowers and leaves of <em>C. monnieri</em> to <em>C. sinica</em> in Y-tube olfactometer. Next, we conducted solid phase microextraction (SPME), gas chromatography-mass spectrometry (GC–MS), and electrophysiological studies (EAG) to analyze the compounds and identified the volatile components which have effects on <em>C. sinica</em>. We also used a Y-tube olfactometer to verify the effectiveness of the volatile components on <em>C. sinica</em> under laboratory conditions. In olfactometer trials, <em>C. sinica</em> adults preferred flowers compared with leaves and fresh air. In GC–MS and electroantennography trials, seventy-six volatiles extracted from <em>C. monnieri</em>, twelve antenna-active components in three different concentrations (0.1 μg/mL, 1 μg/mL, 10 μg/mL) were detected for electroantennography. In the last behavioral identification assays, four synthetic compounds (10 μg/mL) had significant attractiveness of adult <em>C. sinica</em> antenna (i.e., γ-terpinene, <em>trans</em>-β-Ocimene, nerolidol, (Z)-3-Hexen-1-ol). These studies suggest that there is a chemical association between natural enemies <em>C. sinica</em> and the functional plant <em>C. monnieri</em>. This study provides a basis that can facilitate the production and application of attracting natural enemy and development and application of enhancing attractants.</p></div>","PeriodicalId":8880,"journal":{"name":"Biological Control","volume":"192 ","pages":"Article 105516"},"PeriodicalIF":4.2,"publicationDate":"2024-04-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S1049964424000811/pdfft?md5=971aedd0ffd29bef65a7f73377dc173b&pid=1-s2.0-S1049964424000811-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140646649","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Combination of functional plants conserves predators, repels pests, and enhances biological control of Aphis spiraecola in apple orchards","authors":"Zhihui Liu ,&nbsp;Fan Wang ,&nbsp;Yunhe Zhang ,&nbsp;Eresbek Temir ,&nbsp;Xiaotong Zhou ,&nbsp;Yilei Shangguan ,&nbsp;Donghai Zhang ,&nbsp;Zhiping Cai","doi":"10.1016/j.biocontrol.2024.105512","DOIUrl":"10.1016/j.biocontrol.2024.105512","url":null,"abstract":"<div><p>Functional plants possess the ability to attract natural enemies or repel pests, and they play an important role in ecological regulation. While most studies have focused on the impacts of individual plants or plant combinations with similar functions on pests, there is a scarcity of research on the effects of combining plants with different functions, particularly in the case of orchard pests. In this study, we combined plants (<em>Cnidium monnieri</em> (L.) or <em>Brassica napus</em> L.) that attract predators with plants (<em>Ocimum basilicum</em> L. or <em>Mentha haplocalyx</em> Briq.) that repel pests to determine if these combinations can enhance biocontrol of <em>Aphis spiraecola</em> Patch on apple trees. All four combinations reduced the <em>A. spiraecola</em> population on apple trees. <em>B. napus &amp; M. haplocalyx</em> achieved the highest reduction rate (88.58%), followed by <em>C. monnieri &amp; O. basilicum</em> (88.06%), <em>B. napus &amp; O. basilicum</em> (86.11%), and <em>C. monnieri &amp; M. haplocalyx</em> (79.41%). Cage exclusion tests on 29 June and 4 July 2023 showed that biocontrol services index of all combinations was significantly higher than that of the control. Rubidium marking test showed that 61.90%–71.43% of <em>Chrysoperla sinica</em> (Tjeder) individuals in trees had transferred from functional plants. Behavioral responses and field trapping indicated that compounds such as <em>cis</em>-citral, nepetalactone, caryophyllene, beta-pinene, and eugenol, which are present in repellent plants, had significant repellency against <em>A. spiraecola</em>. The use of functional plant combinations in apple orchards can enhance biocontrol of <em>A. spiraecola</em> by promoting predators and by repelling aphid. This supports the potential of functional plant combinations in agroforestry ecosystems for pest biocontrol.</p></div>","PeriodicalId":8880,"journal":{"name":"Biological Control","volume":"192 ","pages":"Article 105512"},"PeriodicalIF":4.2,"publicationDate":"2024-04-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S104996442400077X/pdfft?md5=417ff6a42e903caa4a141d62bcfa3197&pid=1-s2.0-S104996442400077X-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140609195","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Screening native Bacillus strains as potential biological control agents against ginger bacterial wilt and for promoting plant growth","authors":"Wenyan Cui ,&nbsp;Jiajia Zhang ,&nbsp;Wenjia Wang ,&nbsp;Xiaoyun Wu ,&nbsp;Xiyan Luo ,&nbsp;Yuan Zou ,&nbsp;Kunxiu Chen ,&nbsp;Pengjie He","doi":"10.1016/j.biocontrol.2024.105510","DOIUrl":"https://doi.org/10.1016/j.biocontrol.2024.105510","url":null,"abstract":"<div><p>Bacterial wilt, caused by <em>Ralstonia solanacearum</em>, is a destructive disease that causes significant loss in ginger productivity. This disease is notoriously difficult to control by chemical measures, prompting the exploration of biological control as a more sustainable and effective alternative strategy. In our research, we aimed to develop effective microbial agents to combat <em>R. solanacearum</em>-induced bacterial wilt in ginger. Initially, 307 <em>Bacillus</em>-like strains were isolated from ginger rhizosphere soil. Among these, ten strains exhibited significant antibacterial activity after extensive <em>in vitro</em> screening, with <em>Bacillus</em>-like isolate F18 being the most effective. Further tests in a co-culture assay revealed six isolates, notably L70, that significantly reduced the pathogen's fitness. To further assess their effectiveness, six isolates of L3, L72, L73, F18, HC-5, and L70 were then subjected to a hydroponics assay, where they substantially lowered disease incidence in ginger seedlings, especially strains F18, HC-5, and L73. These three strains were identified as <em>Bacillus velezensis</em>, exhibiting beneficial traits such as IAA production, siderophore secretion, and phosphate and potassium solubilization. Additionally, they also harbored genes related to the production of the dipeptide bacilysin and the polyketides macrolactin, bacillaene and difficidin. In greenhouse experiments, these three <em>B. velezensis</em> strains, particularly F18 and HC-5, demonstrated remarkable efficacy in controlling bacterial wilt. Tubers soaked in these biocontrol agents showed reduced disease severity and pathogen population. Moreover, the treatments promoted ginger growth, notably in tuber fresh weight, with HC-5 showing the greatest improvement. Conclusively, this study suggests a highly efficient strategy for biologically controlling ginger bacterial wilt, with <em>B. velezensis</em> strains HC-5, L73, and F18 emerging as promising biocontrol agents.</p></div>","PeriodicalId":8880,"journal":{"name":"Biological Control","volume":"192 ","pages":"Article 105510"},"PeriodicalIF":4.2,"publicationDate":"2024-04-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S1049964424000756/pdfft?md5=2d782f33932df4d6507725329cde0e45&pid=1-s2.0-S1049964424000756-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140604479","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Management of aphids on winter high tunnel crops","authors":"Samantha A. Willden ,&nbsp;Allison Zablah ,&nbsp;Anna Wallingford ,&nbsp;Laura L. Ingwell","doi":"10.1016/j.biocontrol.2024.105511","DOIUrl":"https://doi.org/10.1016/j.biocontrol.2024.105511","url":null,"abstract":"<div><p>High tunnels offer several benefits to specialty crop growers including crop protection and season extension. Although crops are actively grown in high tunnels during the winter, few management recommendations exist for winter pests that are actively feeding and reproducing in this protected environment. This study evaluated the efficacy of three commercially available predators used for the augmentative biological control of aphids, <em>Adalia bipunctata</em>, <em>Orius insidiosus</em>, and <em>Chrysoperla carnea,</em> in combination with OMRI-approved pesticides labeled for aphids on spinach and strawberry. Pesticides included PyGanic (pyrethrin), Neemix (azadirachtin), and Sil-MATRIX (Potassium silicate). Laboratory and field experiments indicate high survival of biocontrol agents under row covers in high tunnels, and preventative and/or curative management of aphids. Spray trials had varied results, but spinach marketability was highest in plots that received PyGanic while strawberry marketability was lowest in this treatment. We also observed high compatibility of predators with each spray product, with one exception being <em>A. bipunctata</em> that was susceptible to PyGanic in one experiment. Strawberry yield (weight per plant) and spinach marketability was negatively correlated with accumulated aphid days in our study, indicating a need for aphid management in these crops during winter.</p></div>","PeriodicalId":8880,"journal":{"name":"Biological Control","volume":"192 ","pages":"Article 105511"},"PeriodicalIF":4.2,"publicationDate":"2024-04-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S1049964424000768/pdfft?md5=908e1abc76c2c09a4a3d7d42816aec23&pid=1-s2.0-S1049964424000768-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140646817","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Investigating the host finding behaviour of the weevil Phytobius vestitus for the biological control of the invasive aquatic weed Myriophyllum aquaticum","authors":"A. Pessina ,&nbsp;L. Humair ,&nbsp;R. Naderi ,&nbsp;G. Röder ,&nbsp;M.L. Seehausen ,&nbsp;S. Rasmann ,&nbsp;P. Weyl","doi":"10.1016/j.biocontrol.2024.105509","DOIUrl":"https://doi.org/10.1016/j.biocontrol.2024.105509","url":null,"abstract":"<div><p>Biological control programmes involve pre-release studies that include host range tests to predict likely negative effects on native species. Behavioural responses of potential biological control agents to olfactory signals emitted by target and non-target species provide information on the host-finding and selection behaviour for safer agent selection. The weevil <em>Phytobius vestitus</em> (Coleoptera: Curculionidae) was identified as a potential biological control agent for the sustainable management of the aquatic weed <em>Myriophyllum aquaticum</em> (Haloragaceae). Using olfactometer-based bioassays, we analysed the host-finding and host-selection behaviour of <em>P. vestitus</em> across a variety of plant species closely related to <em>M. aquaticum</em> using a glass olfactometer. We further analysed the volatile organic compounds emitted by the target and non-target plant species to explain the weevil's observed preferences. We demonstrated that <em>P. vestitus</em> was able to recognise and discriminate between eight closely related Haloragaceae plant species and was significantly more attracted to the olfactory cues emitted by the target plant, <em>M. aquaticum</em>, compared to the other plant species. This study provides a first important indication of the specificity of <em>P. vestitus</em> and shows the role of plant chemistry in host selection and the possibility of refining host range assessment for potential biological control agents. However, exhaustive risk assessment for possible release into targeted new environments still requires further investigations.</p></div>","PeriodicalId":8880,"journal":{"name":"Biological Control","volume":"192 ","pages":"Article 105509"},"PeriodicalIF":4.2,"publicationDate":"2024-04-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S1049964424000744/pdfft?md5=976065fa9ccc36ef047a5eb4f086dfa7&pid=1-s2.0-S1049964424000744-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140545591","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Evaluation of Virgibacillus dokdonensis MCCC 1A00493 as a biological control agent and microbial organic fertilizer against root-knot nematodes","authors":"Wen Chen ,&nbsp;Zhicheng Zhu ,&nbsp;Chen Liu ,&nbsp;Fan Yang ,&nbsp;Wei Dai ,&nbsp;Hao Yu ,&nbsp;Dian Huang ,&nbsp;Wanli Cheng ,&nbsp;Zongze Shao ,&nbsp;Kashif ur Rehman ,&nbsp;Jibin Zhang","doi":"10.1016/j.biocontrol.2024.105508","DOIUrl":"https://doi.org/10.1016/j.biocontrol.2024.105508","url":null,"abstract":"<div><p>Root-knot nematodes (RKNs) can result in severe losses to crop production and economies. <em>Virgibacillus dokdonensis</em> MCCC 1A00493, a deep-sea bacterium, has demonstrated potent antagonistic effects against <em>Meloidogyne incognita in vitro</em>. However, the control efficacy under greenhouse and field conditions remains unclear. In this study, we investigated the nematicidal effect of MCCC 1A00493 fermentation liquid and its synergism with black soldier fly (BSF) larval frass organic fertilizer both in greenhouse and field experiments. MCCC 1A00493 fermentation liquid demonstrated a significant control efficacy on RKNs both in greenhouse and field experiments, with the highest control efficacy reaching 68.97 % and 74.87 %, respectively. Meanwhile, the synergistic effects of MCCC 1A00493 and BSF larvae frass organic fertilizer was investigated by adding 10 % suspension (1 × 10⁹ CFU/mL) of MCCC 1A00493 into 71.51 kg of chicken manure organic fertilizer produced by co-conversion of BSF larvae and <em>Bacillus subtilis</em> BSF-CL. It was noted that MCCC 1A00493 microbial organic fertilizer reduced disease incidence of RKNs significantly both in greenhouse and field experiments, with the root gall index decreasing by 51.75 % and 63.22 %, respectively. MCCC 1A00493 fermentation liquid and microbial organic fertilizer demonstrated a control efficacy on RKNs exceeded commercial nematicide avermectin and commercial bio-organic fertilizer, respectively. In addition, MCCC 1A00493 fermentation liquid and microbial organic fertilizer had positive effects on the growth of tomato plants. These findings confirmed that <em>V.dokdonensis</em> MCCC 1A00493 as a biological control agent and microbial organic fertilizer have significant effect on RKNs and can be used as potential biocontrol preparations.</p></div>","PeriodicalId":8880,"journal":{"name":"Biological Control","volume":"192 ","pages":"Article 105508"},"PeriodicalIF":4.2,"publicationDate":"2024-04-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S1049964424000732/pdfft?md5=51a631363bc37d7fd52a75f52b3f5c41&pid=1-s2.0-S1049964424000732-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140543565","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"The rice endophytic bacterium Bacillus velezensis LS123N provides protection against multiple pathogens and enhances rice resistance to wind with increase in yield","authors":"Chi-Kuan Tu ,&nbsp;Wen-Di Huang ,&nbsp;Pei-Han Wang ,&nbsp;Wei-Lun Lin ,&nbsp;Hong-Yue Chen ,&nbsp;Sheng-Tsz Rau ,&nbsp;Tsu-Cheng Chang ,&nbsp;Li-Sen Young ,&nbsp;Chih-Li Wang ,&nbsp;Miin-Huey Lee","doi":"10.1016/j.biocontrol.2024.105507","DOIUrl":"https://doi.org/10.1016/j.biocontrol.2024.105507","url":null,"abstract":"<div><p>Rice (<em>Oryza sativa</em>) is a globally important staple food, but its production was influenced by various biotic and abiotic stresses. This study involved screening endophytic bacterial strains for their antagonistic activities and control efficacy against multiple rice pathogens <em>in planta</em> assays. Subsequent greenhouse investigations identified <em>Bacillus velezensis</em> LS123N as the most promising strain for effectively controlling various rice diseases, including bacterial blight, rice blast, bakanae disease, <em>Pythium</em> disease, and brown spot disease. Field trials further demonstrated that LS123N significantly reduced naturally occurring brown spot disease caused by <em>Bipolaris oryzae</em> in both seedlings and mature rice plants, and increased rice yields. For disease control against bacterial blight, <em>Pythium</em> disease, and brown spot, only a single treatment during seed germination resulted in significant disease control efficacy. The application of LS123N during seed germination aligns with common rice cultivation practices. Additionally, LS123N exhibited the capacity to improve rice resistance to wind stress and enhance rice growth during the seedling stage. Endophytic colonization of LS123N was evidenced from seed to mature rice plants after seed treatment. Interestingly, the expression of many rice defense genes was suppressed within 48 h of the LS123N introduction. <em>In vitro</em> assays showed that LS123N inhibited spore germination and normal growth of germ tubes of <em>B. oryzae</em>, produced multiple hydrolases, siderophores, and IAA, and had the ability to solubilize phosphorus compounds. In summary, these results indicate that <em>B. velezensis</em> LS123N is a promising biocontrol agent and has the potential to be developed into a biofungicide, biofertilizer, and biostimulator.</p></div>","PeriodicalId":8880,"journal":{"name":"Biological Control","volume":"192 ","pages":"Article 105507"},"PeriodicalIF":4.2,"publicationDate":"2024-03-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S1049964424000720/pdfft?md5=ceabe10882c960383604b562bd365602&pid=1-s2.0-S1049964424000720-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140327939","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"PROSPECTS FOR THE BIOLOGICAL CONTROL OF WEEDS IN ARGENTINA","authors":"F.E. Anderson ,&nbsp;S.M. Zalba ,&nbsp;J. Ansaldi ,&nbsp;A Sosa ,&nbsp;F. Mc Kay ,&nbsp;G.J. Cabrera Walsh","doi":"10.1016/j.biocontrol.2024.105497","DOIUrl":"https://doi.org/10.1016/j.biocontrol.2024.105497","url":null,"abstract":"<div><p>Argentina hosted pioneering classical weed biological control projects that were carried out by state institutions between the 1970s and 1990s, at a time when the practice was almost unheard of in Latin America. Despite the early development of these initiatives, the discipline did not prosper and all projects were discontinued. Notwithstanding, Argentina continued to provide biological control agents for the control of weeds in many other parts of the world, ensuring the expertise persisted. Although public concern about invasive plants and chemical-dependent agricultural practices has increased over time, it did not lead to a greater acceptance of classical biological control of weeds, which is still regarded with mistrust or ignored in many public and academic circles alike. Furthermore, there are no systems in place to reach a consensus on declaring weeds as targets for biological control in Argentina. In this paper we discuss different ways in which the community of researchers working in the field in Argentina can help relaunch the biological control of weeds, including the preparation of a prioritized list of target species. A list of this kind would not only reduce costs, but also help in developing trust in the discipline of biological control informing regulators and decision makers in this regard. Prospects are brighter today than a few years ago, but considerable communication and educational work on the benefits of this practice is still required to gain more support before it can effectively be re-implemented.</p></div>","PeriodicalId":8880,"journal":{"name":"Biological Control","volume":"192 ","pages":"Article 105497"},"PeriodicalIF":4.2,"publicationDate":"2024-03-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S1049964424000628/pdfft?md5=f2a0779240ddfb48edb4bdf15e25161c&pid=1-s2.0-S1049964424000628-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140191163","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}