Lolium

14,000,000 Leading Edge Experts on the ideXlab platform

Scan Science and Technology

Contact Leading Edge Experts & Companies

Scan Science and Technology

Contact Leading Edge Experts & Companies

The Experts below are selected from a list of 294 Experts worldwide ranked by ideXlab platform

M. O. Humphreys - One of the best experts on this subject based on the ideXlab platform.

D. Wilman - One of the best experts on this subject based on the ideXlab platform.

R. A. M. Irianni - One of the best experts on this subject based on the ideXlab platform.

Caio A. C. G. Brunharo - One of the best experts on this subject based on the ideXlab platform.

  • Non-target-Site Resistance in Lolium spp. Globally: A Review.
    Frontiers in plant science, 2021
    Co-Authors: Andréia K. Suzukawa, Lucas K. Bobadilla, Carol A. Mallory-smith, Caio A. C. G. Brunharo
    Abstract:

    The Lolium genus encompasses many species that colonize a variety of disturbed and non-disturbed environments. Lolium perenne L. spp. perenne, L. perenne L. spp. multiflorum, and L. rigidum are of particular interest to weed scientists because of their ability to thrive in agricultural and non-agricultural areas. Herbicides are the main tool to control these weeds; however, Lolium spp. populations have evolved multiple- and cross-resistance to at least 14 herbicide mechanisms of action in more than 21 countries, with reports of multiple herbicide resistance to at least seven mechanisms of action in a single population. In this review, we summarize what is currently known about non-target-site resistance in Lolium spp. to acetyl CoA carboxylase, acetohydroxyacid synthase, microtubule assembly, photosystem II, 5-enolpyruvylshikimate-3-phosphate synthase, glutamine synthetase, very-long chain fatty acids, and photosystem I inhibitors. We suggest research topics that need to be addressed, as well as strategies to further our knowledge and uncover the mechanisms of non-target-site resistance in Lolium spp.

  • Review: evolutionary drivers of agricultural adaptation in Lolium spp.
    Pest management science, 2020
    Co-Authors: Maor Matzrafi, Christopher Preston, Caio A. C. G. Brunharo
    Abstract:

    The genus Lolium comprises many species, of which L. perenne ssp. multiflorum, L. perenne ssp. perenne, and L. rigidum are of worldwide agricultural importance as both pasture crops and as weeds. These three species are inter-fertile, obligate out-crossers with a self-incompatible reproduction system. This combination contributes to high genetic diversity that supplies new variants during expansion to new natural areas and agricultural environments. Human dispersal, de-domestication and crop-weed hybridization events between Lolium spp., or with others such as Festuca spp., are likely associated with their distinct weediness abilities. Furthermore, new introductions followed by introgression may hasten adaptation to new environments. Most Lolium-related weed science studies have focused on adaptation leading to herbicide resistance, but other forms of adaptation may also occur. In this review, we explore how the wide genetic variation among Lolium species and hybridization with other species may contribute to range expansion, and adaptation to both new agricultural practices and future predicted climate change scenarios. © 2020 The Authors. Pest Management Science published by John Wiley & Sons Ltd on behalf of Society of Chemical Industry.

Barry L. Hoffer - One of the best experts on this subject based on the ideXlab platform.

  • Metabolism of diclofop-methyl in susceptible and resistant biotypes of Lolium rigidum
    Pesticide Biochemistry and Physiology, 1991
    Co-Authors: Richard H. Shimabukuro, Barry L. Hoffer
    Abstract:

    Abstract Differential metabolism and detoxication of the postemergence graminicide diclofop-methyl (DM) [methyl 2-(4-(2′,4′-dichlorophenoxy)phenoxy)propanoate] is not the basis for selectivity between the DM resistant (R) and susceptible (S) biotypes of Lolium rigidum. Metabolism of DM did not differ significantly between the two biotypes. DM metabolism in Lolium sp. resembled that of susceptible oat and wild oat (Avena sp.) and not resistant wheat (Triticum aestivum). Metabolism of DM was assayed in excised shoots, roots and leaves (leaf surface-applied DM) of R and S Lolium biotypes. Higher concentrations of phytotoxic diclofop (acid) remained in shoots and roots of R and S Lolium biotypes (42 to 47% of absorbed DM after 72 hr in roots), than was found in susceptible oat. Conjugates of both diclofop (ester conjugate) and aryl hydroxylated diclofop (phenolic conjugate) were formed in Lolium sp. Aryl hydroxylation may be slightly higher in roots than in shoots of both biotypes but hydroxylation was less than in resistan wheat. The mode of action of DM in the S biotype of Lolium is probably similar to that in susceptible Avena sp. since the phytotoxicity of DM in both species is reversed by 2,4-dichlorophenoxyacetic acid.

Related terms

Lolium - 15 days free trial to Access Experts & Abstracts