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Disentangling the Context Dependency...

Thompson, Kathleen M.,

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Disentangling the Context Dependency of Mycorrhizal Relationships to Better Understand Current and Future Forest Structure /

紀錄類型:	書目-電子資源 : Monograph/item
正題名/作者:	Disentangling the Context Dependency of Mycorrhizal Relationships to Better Understand Current and Future Forest Structure // Kathleen M Thompson.
作者:	Thompson, Kathleen M.,
面頁冊數:	1 electronic resource (164 pages)
附註:	Source: Dissertations Abstracts International, Volume: 85-11, Section: A.
Contained By:	Dissertations Abstracts International85-11A.
標題:	Botany. -
電子資源:	https://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=31294840
ISBN:	9798382490359

Disentangling the Context Dependency of Mycorrhizal Relationships to Better Understand Current and Future Forest Structure /
Thompson, Kathleen M.,

Disentangling the Context Dependency of Mycorrhizal Relationships to Better Understand Current and Future Forest Structure /Kathleen M Thompson. - 1 electronic resource (164 pages)

Source: Dissertations Abstracts International, Volume: 85-11, Section: A.

Despite the prevalence and well-known importance of mycorrhizal symbioses, the factors influencing these plant-fungal interactions are not well understood. Part of this muddling is due to the highly context-dependent nature of these dynamic systems. Though, as global changes continue to ensue, understanding connections between nutrient cycling and forest composition becomes increasingly important. Through the use of a dually-colonized Populus system, which can associate with both ecto- (EM) and arbuscular mycorrhizal (AM) fungi simultaneously, this research program has investigated the role of environmental abiotic factors and genetics to determine which factors favor one mycorrhizal guild over the other. Additionally, this research has studied the nutrient economics of mycorrhizal interactions, which is an important consideration for predictive models of biogeochemical cycling and global change. Overall, we found 1) evidence that dually colonized Populus deltoides is able to shift its mycorrhizal investment strategies in adaptive ways across environments, highlighting the influences of environmentally dependent costs and benefits in shaping plant mycorrhizal strategies, 2) that P. tremuloides litter chemistry and mycorrhizal investment are genetically and functionally linked and that tree litter chemistry has the potential ability to promote nutrient acquisition feedback loops through its effects on EM functional diversity, and 3) that the plant nitrogen return rate per unit carbon invested in EM fungi is a function of nutrient quality and degree of symbiotic investment. In summation, the results of this work contribute to our understanding of influences dictating the current ranges and geographic distributions of tree species - including non-dual species. Understanding factors controlling the current compositional structure and biogeochemical cycling of our forests is central to predicting future forest states and functions.

English

ISBN: 9798382490359Subjects--Topical Terms:

516217
Botany.
Subjects--Index Terms:

Biogeochemical cycling

Disentangling the Context Dependency of Mycorrhizal Relationships to Better Understand Current and Future Forest Structure /
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520 $a Despite the prevalence and well-known importance of mycorrhizal symbioses, the factors influencing these plant-fungal interactions are not well understood. Part of this muddling is due to the highly context-dependent nature of these dynamic systems. Though, as global changes continue to ensue, understanding connections between nutrient cycling and forest composition becomes increasingly important. Through the use of a dually-colonized Populus system, which can associate with both ecto- (EM) and arbuscular mycorrhizal (AM) fungi simultaneously, this research program has investigated the role of environmental abiotic factors and genetics to determine which factors favor one mycorrhizal guild over the other. Additionally, this research has studied the nutrient economics of mycorrhizal interactions, which is an important consideration for predictive models of biogeochemical cycling and global change. Overall, we found 1) evidence that dually colonized Populus deltoides is able to shift its mycorrhizal investment strategies in adaptive ways across environments, highlighting the influences of environmentally dependent costs and benefits in shaping plant mycorrhizal strategies, 2) that P. tremuloides litter chemistry and mycorrhizal investment are genetically and functionally linked and that tree litter chemistry has the potential ability to promote nutrient acquisition feedback loops through its effects on EM functional diversity, and 3) that the plant nitrogen return rate per unit carbon invested in EM fungi is a function of nutrient quality and degree of symbiotic investment. In summation, the results of this work contribute to our understanding of influences dictating the current ranges and geographic distributions of tree species - including non-dual species. Understanding factors controlling the current compositional structure and biogeochemical cycling of our forests is central to predicting future forest states and functions.
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590 $a School code: 0262
650 4 $a Botany. $3 516217
650 4 $a Microbiology. $3 536250
650 4 $a Biogeochemistry. $3 545717
653 $a Biogeochemical cycling
653 $a Mycorrhizae
653 $a Populus deltoides
653 $a Arbuscular mycorrhizal
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690 $a 0410
690 $a 0503
690 $a 0425
710 2 $a The University of Wisconsin - Madison. $b Botany. $e degree granting institution. $3 3765832
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