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Investigating the use of Arbuscular ...

Cooney, Danielle Rose.

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Investigating the use of Arbuscular Mycorrhizal Fungi to Improve Potassium Acquisition for Soybeans Grown in North Carolina.

Record Type:	Electronic resources : Monograph/item
Title/Author:	Investigating the use of Arbuscular Mycorrhizal Fungi to Improve Potassium Acquisition for Soybeans Grown in North Carolina./
Author:	Cooney, Danielle Rose.
Published:	Ann Arbor : ProQuest Dissertations & Theses, : 2023,
Description:	197 p.
Notes:	Source: Dissertations Abstracts International, Volume: 85-01, Section: B.
Contained By:	Dissertations Abstracts International85-01B.
Subject:	Agriculture. -
Online resource:	https://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=30516402
ISBN:	9798379871420

Investigating the use of Arbuscular Mycorrhizal Fungi to Improve Potassium Acquisition for Soybeans Grown in North Carolina.
Cooney, Danielle Rose.

Investigating the use of Arbuscular Mycorrhizal Fungi to Improve Potassium Acquisition for Soybeans Grown in North Carolina. - Ann Arbor : ProQuest Dissertations & Theses, 2023 - 197 p.

Source: Dissertations Abstracts International, Volume: 85-01, Section: B.

Thesis (Ph.D.)--North Carolina State University, 2023.

This item must not be sold to any third party vendors.

Over 450 million years ago, the evolution of plants growing on land required the support of a mutualistic symbiotic relationship with arbuscular mycorrhizal (AM) fungi in order to survive and thrive. Today, these mutualist occurrences between soil microorganisms, soil nutrients, and plant roots still occur, with AM fungi being the most prevalent type of symbiosis among land plants. This long-standing mutualistic relationship between AM fungi and plants is now gaining substantial attention as a potential type of biofertilizer in production systems. Currently, AM fungal research is predominantly focused in highly-controlled laboratory settings with model plant species. In contrast, foundational agronomic work related to potassium and soybean production occurs in field-based settings. In order to address both the micro and macro information spaces of these areas related to soil microorganisms, soil nutrients, and plant roots relative to translating knowledge between basic and applied sciences; a collection of interrelated studies was conducted to evaluate the potential of AM fungi in improving the acquisition of potassium in a prominent agricultural row-crop commodity, soybeans. All with the overarching goal of increasing the translational value of laboratory-based success into beneficial production agriculture management, for the betterment of global challenges related to food, fiber, and fuel security. The scientific quantification of such hypotheses required three distinct types of research trials that span the realms of basic to applied sciences, utilizing growing media, environmental conditions, and controls to help facilitate improved access to unbiased information. These three trials as individuals work to answer specific questions and, together overall, will open essential insights into bridging together the basic research community to serve a role in addressing grower concerns towards potential solutions regarding novel production practices focused on longerterm production resilience. The first study was a two-year, field-based, research trial conducted in North Carolina that evaluated twelve treatment combinations consisting of: potassium fertilizer, AM fungal inoculum, and soybean maturity groups across three different site locations with distinctive soil types. The results derive that the environment, management, and selected maturity group were significant drivers in relative soybean responses. Regarding the treatment factors of potassium fertilizer application and the commercial mycorrhizal inoculum product, results show limited impact of the fungal inoculation. To continue evaluating the translation of knowledge from the laboratory to the field, a complementary greenhouse trial was conducted. By adding this intermediate step, authors were able to provide additional control to the complexity of the field-based study in effort to better quantify the inference space from the trials conducted, as well as, understanding the potential impact on root development related to the application of commercial arbuscular mycorrhizal fungi. The results further elaborate the impact of soil as a significant driver in these studies, and underscores the importance of inoculum source viability. Finally, the last study is laboratory-based effort with an isolated pure culture of AM fungi that focuses specifically on evaluating the ability of AM to exclusively transport potassium ions while utilizing rubidium as an elemental proxy for potassium.Published results with the model legume, Medicago truncatula, demonstrate the success of rubidium as a proxy and the active role of AM fungi in facilitating potassium transport to their host.

ISBN: 9798379871420Subjects--Topical Terms:

518588
Agriculture.

Investigating the use of Arbuscular Mycorrhizal Fungi to Improve Potassium Acquisition for Soybeans Grown in North Carolina.
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500 $a Source: Dissertations Abstracts International, Volume: 85-01, Section: B.
500 $a Advisor: Hawkes, Christine;Gatiboni, Luciano C.;Vann, Rachel A.;Shi, Wei;Garcia, Kevin.
502 $a Thesis (Ph.D.)--North Carolina State University, 2023.
506 $a This item must not be sold to any third party vendors.
520 $a Over 450 million years ago, the evolution of plants growing on land required the support of a mutualistic symbiotic relationship with arbuscular mycorrhizal (AM) fungi in order to survive and thrive. Today, these mutualist occurrences between soil microorganisms, soil nutrients, and plant roots still occur, with AM fungi being the most prevalent type of symbiosis among land plants. This long-standing mutualistic relationship between AM fungi and plants is now gaining substantial attention as a potential type of biofertilizer in production systems. Currently, AM fungal research is predominantly focused in highly-controlled laboratory settings with model plant species. In contrast, foundational agronomic work related to potassium and soybean production occurs in field-based settings. In order to address both the micro and macro information spaces of these areas related to soil microorganisms, soil nutrients, and plant roots relative to translating knowledge between basic and applied sciences; a collection of interrelated studies was conducted to evaluate the potential of AM fungi in improving the acquisition of potassium in a prominent agricultural row-crop commodity, soybeans. All with the overarching goal of increasing the translational value of laboratory-based success into beneficial production agriculture management, for the betterment of global challenges related to food, fiber, and fuel security. The scientific quantification of such hypotheses required three distinct types of research trials that span the realms of basic to applied sciences, utilizing growing media, environmental conditions, and controls to help facilitate improved access to unbiased information. These three trials as individuals work to answer specific questions and, together overall, will open essential insights into bridging together the basic research community to serve a role in addressing grower concerns towards potential solutions regarding novel production practices focused on longerterm production resilience. The first study was a two-year, field-based, research trial conducted in North Carolina that evaluated twelve treatment combinations consisting of: potassium fertilizer, AM fungal inoculum, and soybean maturity groups across three different site locations with distinctive soil types. The results derive that the environment, management, and selected maturity group were significant drivers in relative soybean responses. Regarding the treatment factors of potassium fertilizer application and the commercial mycorrhizal inoculum product, results show limited impact of the fungal inoculation. To continue evaluating the translation of knowledge from the laboratory to the field, a complementary greenhouse trial was conducted. By adding this intermediate step, authors were able to provide additional control to the complexity of the field-based study in effort to better quantify the inference space from the trials conducted, as well as, understanding the potential impact on root development related to the application of commercial arbuscular mycorrhizal fungi. The results further elaborate the impact of soil as a significant driver in these studies, and underscores the importance of inoculum source viability. Finally, the last study is laboratory-based effort with an isolated pure culture of AM fungi that focuses specifically on evaluating the ability of AM to exclusively transport potassium ions while utilizing rubidium as an elemental proxy for potassium.Published results with the model legume, Medicago truncatula, demonstrate the success of rubidium as a proxy and the active role of AM fungi in facilitating potassium transport to their host.
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