Advancing Weed Management Strategies Using Metagenomic Techniques

Kao‐Kniffin, Jenny; Carver, Sarah M.; DiTommaso, Antonio

doi:10.1614/ws-d-12-00114.1

Cited by 28 publications

(24 citation statements)

References 152 publications

(159 reference statements)

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Biological control, including bio herbicides, may be an alternative to chemical herbicides in the future (Yamaguchi et al 2000). Similarly, metagenomic approaches to the development of new herbicides using microorganisms for weed management may be suitable for future agriculture (Kao-Kniffin et al 2013). We believe that an integrated approach, together with vigilance, knowledge, and effective management policies, can lead to the design of novel control strategies in rice cropping systems.…”

Section: Strategies To Control and Manage Weedy Ricementioning

confidence: 99%

Weedy rice in sustainable rice production. A review

Nadir

Xiong

Zhu

et al. 2017

Agron. Sustain. Dev.

View full text Add to dashboard Cite

Weedy rice refers to the unwanted plants of the genus Oryza that have some undesirable agronomic traits and pose a major threat to sustainable rice production worldwide. Widespread adoption of direct seeded rice and hybridization or gene flow between cultivated rice and their wild relatives has resulted in the creation and dissemination of weedy rice. Currently, weedy rice (Oryza sativa f. spontanea) has become one of the most common weeds infesting rice fields worldwide. In this paper, we review the biology, physiology, evolution, and genetic features of weedy rice. We also discuss the major obstacles in weedy rice management, including high diversity of weedy rice, ecological impacts of gene flow on weedy rice, changing climate, and weedy rice management. We then present a framework for the sustainable management and utilization of weedy rice. Our main emphasis is to explore the reservoir of natural variations in weedy germplasm and to utilize them for crop improvement. This review outlines some of the latest biotechnological tools to dissect the genetic backgrounds of several favorable traits of weedy rice that may prove beneficial for breeding and evolutionary studies on cultivated rice. We suggest that by merging the disciplines of genomics, breeding, and weed management, we can achieve the goal of sustainable rice production.

show abstract

Section: Strategies To Control and Manage Weedy Ricementioning

confidence: 99%

Weedy rice in sustainable rice production. A review

Nadir

Xiong

Zhu

et al. 2017

Agron. Sustain. Dev.

View full text Add to dashboard Cite

show abstract

“…However, it is widely acknowledged that their inherently restricted weed control spectrum and environment‐dependent efficacy also limit commercialization potential. Optimizing the discovery and screening process, including rapid identification of natural products and genetic manipulations to enhance efficacy of biocontrol microorganisms, may aid in the successful commercialization of biologicals or natural products.…”

Section: Where Are We Going?mentioning

confidence: 99%

The future for weed control and technology

Shaner

Beckie

2014

Pest Management Science

173

157

View full text Add to dashboard Cite

This review is both a retrospective (what have we missed?) and prospective (where are we going?) examination of weed control and technology, particularly as it applies to herbicide-resistant weed management (RWM). Major obstacles to RWM are discussed, including lack of diversity in weed management, unwillingness of many weed researchers to conduct real integrated weed management research or growers to accept recommendations, influence or role of agrichemical marketing and governmental policy and lack of multidisciplinary research. We then look ahead to new technologies that are needed for future weed control in general and RWM in particular, in areas such as non-chemical and chemical weed management, novel herbicides, site-specific weed management, drones for monitoring large areas, wider application of 'omics' and simulation model development. Finally, we discuss implementation strategies for integrated weed management to achieve RWM, development of RWM for developing countries, a new classification of herbicides based on mode of metabolism to facilitate greater stewardship and greater global exchange of information to focus efforts on areas that maximize progress in weed control and RWM. There is little doubt that new or emerging technologies will provide novel tools for RMW in the future, but will they arrive in time?

show abstract

“…The overall set of techniques we describe in this article have several concerns that should be noted and possibly alleviated in future research. Building the metagenomic library has caveats covered in previous reviews (Ekkers et al 2012;Kao-Kniffin et al 2013). Also, the initial screen might not be the best method for narrowing clones for further studies on allelopathic activity.…”

Section: Resultsmentioning

confidence: 99%

“…Metagenomic techniques have advanced greatly in the past two decades, allowing for natural product discovery of enzymes, antibiotics, and other important compounds (Lorenz and Eck 2005;Schloss and Handelsman 2003). Similar techniques can be developed to isolate allelopathic compounds produced by soil microorganisms (Kao-Kniffin et al 2013). Isolation of allelopathic compounds produced by soil microorganisms requires obtaining the complete set of biosynthetic genes coding for production of the compound (Rutledge and Challis 2015).…”

mentioning

confidence: 99%

Uncovering Plant Growth-Mediating Allelochemicals Produced by Soil Microorganisms

2016

Self Cite

View full text Add to dashboard Cite

Coevolving interactions between a plant population and its microbiota can potentially yield a rhizosphere enriched in metagenomes containing the blueprints for a vast array of natural products. We describe a method of isolating those metabolites through activity-based screening of soil metagenomic libraries. The method allows for the isolation of small molecules produced in vector–host expression systems containing large-insert DNA fragments extracted from the target plant rhizospheres. Allelopathic activities derived from selected clones were screened against a series of controls. Nonmetric multidimensional scaling (NMS) showed similar effects of the set of controls on lettuce growth, whereas annual bluegrass had a broader range of growth responses. Methanol extracts from clones indicating activity showed distinct patterns in grass seedling growth from the empty vector control, but the same extracts showed no effect on lettuce. The results indicate that the metagenomics method and bioassay screen of clone extracts are tools that can be used for initial determination of allelopathic activity from noncultured soil microbiota.

show abstract

Advancing Weed Management Strategies Using Metagenomic Techniques

Cited by 28 publications

References 152 publications

Weedy rice in sustainable rice production. A review

Weedy rice in sustainable rice production. A review

The future for weed control and technology

Uncovering Plant Growth-Mediating Allelochemicals Produced by Soil Microorganisms

Contact Info

Product

Resources

About