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Differences in Plant Hormone Responses Between Arabidopsis Thaliana and Schrenkiella Parvula Facing Lithium Toxicities.

Record Type:	Language materials, manuscript : Monograph/item
Title/Author:	Differences in Plant Hormone Responses Between Arabidopsis Thaliana and Schrenkiella Parvula Facing Lithium Toxicities./
Author:	Li, Jifeng.
Description:	1 online resource (114 pages)
Notes:	Source: Dissertations Abstracts International, Volume: 85-05, Section: B.
Contained By:	Dissertations Abstracts International85-05B.
Subject:	Toxicity. -
Online resource:	click for full text (PQDT)
ISBN:	9798380712354

Differences in Plant Hormone Responses Between Arabidopsis Thaliana and Schrenkiella Parvula Facing Lithium Toxicities.
Li, Jifeng.

Differences in Plant Hormone Responses Between Arabidopsis Thaliana and Schrenkiella Parvula Facing Lithium Toxicities. - 1 online resource (114 pages)

Source: Dissertations Abstracts International, Volume: 85-05, Section: B.

Thesis (Ph.D.)--Louisiana State University and Agricultural & Mechanical College, 2023.

Includes bibliographical references

Investigating stress responses in plants is central to plant development studies and crop research. Identifying mechanisms of plant abiotic stress tolerance and adaptation will be keys to relieve the conflict between an increasing global population and declining agronomic land. Studies on extremophytes and their genetic responses to environmental stress are a way to help understand how and why these extremophile plants can develop well under extreme environments including high salinity and heavy metal toxicity. The studies herein first focus on comparative responses at the genetic level to lithium toxicity between Arabidopsis thaliana and Schrenkiella parvula. Based on elemental quantification with ICP-MS, Arabidopsis has a greater ability to translocate lithium from roots to shoots than S. parvula. Results of RNA-seq and GC-MS indicated that many biological processes of Arabidopsis are affected by lithium, including hormone signaling pathways, hormone biosynthesis pathways, and sugar content in roots. S. parvula, an extremophyte, appears able to maintain these biological processes in response to lithium as compared with Arabidopsis. Second, several rice cultivars were selected for further analysis based on preliminary findings that they have relatively high or low arsenic accumulation in their grain. ICP experiments revealed important differences in accumulation of total arsenic, inorganic arsenic, and organic arsenic. A candidate gene list was created according to previous QTLs related to arsenic accumulation and identified SNPs based on two rice cultivars showing extreme opposite traits of grain arsenic accumulation. These candidate genes may play an important role in the arsenic accumulation and tolerance differences observed in this study. Taken together, these findings will contribute to understanding how plants respond to lithium and arsenic, which can ultimately be used to enhance agricultural production and food safety.

Electronic reproduction.
Ann Arbor, Mich. :
ProQuest,
2024

Mode of access: World Wide Web

ISBN: 9798380712354Subjects--Topical Terms:

1413674
Toxicity.
Index Terms--Genre/Form:

554714
Electronic books.

Differences in Plant Hormone Responses Between Arabidopsis Thaliana and Schrenkiella Parvula Facing Lithium Toxicities.
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520 $a Investigating stress responses in plants is central to plant development studies and crop research. Identifying mechanisms of plant abiotic stress tolerance and adaptation will be keys to relieve the conflict between an increasing global population and declining agronomic land. Studies on extremophytes and their genetic responses to environmental stress are a way to help understand how and why these extremophile plants can develop well under extreme environments including high salinity and heavy metal toxicity. The studies herein first focus on comparative responses at the genetic level to lithium toxicity between Arabidopsis thaliana and Schrenkiella parvula. Based on elemental quantification with ICP-MS, Arabidopsis has a greater ability to translocate lithium from roots to shoots than S. parvula. Results of RNA-seq and GC-MS indicated that many biological processes of Arabidopsis are affected by lithium, including hormone signaling pathways, hormone biosynthesis pathways, and sugar content in roots. S. parvula, an extremophyte, appears able to maintain these biological processes in response to lithium as compared with Arabidopsis. Second, several rice cultivars were selected for further analysis based on preliminary findings that they have relatively high or low arsenic accumulation in their grain. ICP experiments revealed important differences in accumulation of total arsenic, inorganic arsenic, and organic arsenic. A candidate gene list was created according to previous QTLs related to arsenic accumulation and identified SNPs based on two rice cultivars showing extreme opposite traits of grain arsenic accumulation. These candidate genes may play an important role in the arsenic accumulation and tolerance differences observed in this study. Taken together, these findings will contribute to understanding how plants respond to lithium and arsenic, which can ultimately be used to enhance agricultural production and food safety.
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