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Related Concept Videos

Responses to Salt Stress02:02

Responses to Salt Stress

13.1K
Salt stress—which can be triggered by high salt concentrations in a plant’s environment—can significantly affect plant growth and crop production by influencing photosynthesis and the absorption of water and nutrients.
13.1K
Responses to Heat and Cold Stress02:45

Responses to Heat and Cold Stress

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Every organism has an optimum temperature range within which healthy growth and physiological functioning can occur. At the ends of this range, there will be a minimum and maximum temperature that interrupt biological processes.
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Adaptations that Reduce Water Loss01:57

Adaptations that Reduce Water Loss

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Though evaporation from plant leaves drives transpiration, it also results in loss of water. Because water is critical for photosynthetic reactions and other cellular processes, evolutionary pressures on plants in different environments have driven the acquisition of adaptations that reduce water loss.
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Transcription01:10

Transcription

146.9K
Overview
Transcription is the process of synthesizing RNA from a DNA sequence by RNA polymerase. It is the first step in producing a protein from a gene sequence. Additionally, many other proteins and regulatory sequences are involved in the proper synthesis of messenger RNA (mRNA). Regulation of transcription is responsible for the differentiation of all the different types of cells and often for the proper cellular response to environmental signals.
Transcription Can Produce Different Kinds...
146.9K
Tonicity in Plants01:20

Tonicity in Plants

30.6K
Plant cells maintain appropriate osmotic balance in extreme conditions. For instance, plants in dry environments store water in vacuoles, limit the opening of their stoma, and have thick, waxy cuticles to prevent unnecessary water loss. Some species of plants that live in salty environments store salt in their roots. As a result, water osmosis occurs in the root from the surrounding soil.
Tonicity
Tonicity describes the capacity of a cell to lose or gain water depending on the solute...
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Responses to Drought and Flooding02:41

Responses to Drought and Flooding

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Water plays a significant role in the life cycle of plants. However, insufficient or excess of water can be detrimental and pose a serious threat to plants.
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Analysis of Effect of Compound Salt Stress on Seed Germination and Salt Tolerance Analysis of Pepper Capsicum annuum L.
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Exploring salt tolerance mechanisms using machine learning for transcriptomic insights: case study in Spartina

Zhangping Huang1,2, Shoukun Chen1,2,3, Kunhui He1,2

  • 1State Key Laboratory of Crop Gene Resources and Breeding, Institute of Crop Sciences, Chinese Academy of Agricultural Sciences (CAAS), Beijing 100081, China.

Horticulture Research
|May 20, 2024
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Summary

Understanding salt tolerance in crops is vital. This study uses machine learning to analyze gene function in Spartina alterniflora, revealing new insights into salt stress response pathways and alternative splicing.

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Area of Science:

  • Plant Biology
  • Genomics
  • Biotechnology

Background:

  • Salt stress significantly impacts global crop yields, necessitating research into plant salt tolerance mechanisms.
  • Accurate functional annotation of genes is essential for understanding these mechanisms, but challenges exist for under-studied species.
  • Spartina alterniflora, a highly salt-tolerant halophyte, offers a valuable model for studying salt stress responses.

Purpose of the Study:

  • To investigate the transcriptional and alternative splicing responses of Spartina alterniflora to varying salt concentrations.
  • To apply NetGO 3.0, a novel machine learning annotation method, for predicting gene functions without relying on inter-species homology.
  • To elucidate the salt tolerance mechanisms in Spartina alterniflora, focusing on key pathways and gene families.

Main Methods:

  • Transcriptomic analysis of Spartina alterniflora under different salt stress levels.
  • Application of NetGO 3.0 for functional gene annotation, particularly for differentially expressed genes.
  • Genome-wide analysis of alternative splicing events in response to salt stress.

Main Results:

  • Salt stress induced significant changes in gene transcription, ion transport, and reactive oxygen species (ROS) metabolism pathways.
  • A SWEET gene family member, SA_12G129900.m1, was identified and showed convergent selection with rice SWEET15.
  • Minimal overlap was observed between differentially expressed and differentially spliced genes, suggesting distinct roles in salt tolerance.

Conclusions:

  • NetGO 3.0 provides an effective method for gene function prediction in under-studied species, independent of homology.
  • Spartina alterniflora employs both transcriptional regulation and alternative splicing to enhance salt tolerance, with surprisingly distinct gene sets involved.
  • The findings offer a new approach for discovering gene functions and understanding salt tolerance mechanisms across diverse plant species.