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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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Regulation of Transpiration by Stomata02:04

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During photosynthesis, plants acquire the necessary carbon dioxide and release the produced oxygen back into the atmosphere. Openings in the epidermis of plant leaves is the site of this exchange of gasses. A single opening is called a stoma—derived from the Greek word for “mouth.” Stomata open and close in response to a variety of environmental cues.
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Responses to Drought and Flooding02:41

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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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Global Climate Change01:50

Global Climate Change

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Throughout its ~4.5 billion year history, the Earth has experienced periods of warming and cooling. However, the current drastic increase in global temperatures is well outside of the Earth’s cyclic norms, and evidence for human-caused global climate change is compelling. Paleoclimatology, the study of ancient climate conditions, provides ample evidence for human-caused global climate change by comparing recent conditions with those in the past.
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Transcription01:10

Transcription

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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.
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コメントへの返信 "森林の微気候ダイナミクスは,温暖化に対する植物の反応を促す"

Florian Zellweger1,2, Pieter De Frenne3, Jonathan Lenoir4

  • 1Forest Ecology and Conservation Group, Department of Plant Sciences, University of Cambridge, Cambridge CB2 3EA, UK. florian.zellweger@wsl.ch.

Science (New York, N.Y.)
|November 27, 2020
PubMed
まとめ

マクロ気候ではなく マイクロ気候の温暖化が 森林の植物のコミュニティの 温度上昇に対する反応を より良く予測します 熱性化に関する我々の発見は 代替分析にもかかわらず有効である.

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科学分野:

  • エコロジー
  • 気候変動の生物学
  • 植物学

背景:

  • 森林の植物群は 気候変動に敏感です
  • 温暖化傾向は 温暖化効果の重要な指標です
  • 温暖化効果の解釈には 気候データスケールの 慎重な検討が必要です

研究 の 目的:

  • 森林植物の熱性化に対する温暖化効果の解釈に関する批判に対処する.
  • 森林植物のコミュニティにおけるマイクロ気候とマクロ気候の温暖化の予測力を評価する.
  • 気候変動への影響に関する 元の結論を再確認する

主な方法:

  • 温度の変化に関する森林植物群のデータ分析
  • マイクロ気候とマクロ気候の温暖化データを予測として比較する.
  • 既存のデータと解釈を代替分析方法に基づいて再評価する.

主要な成果:

  • マイクロ気候の温暖化はマクロ気候の温暖化よりも 森林植物コミュニティの反応の 重要な予測因子である.
  • Bertrand et al が提案した代替分析 研究の核心的な結果を変えることはありません.
  • 熱性化傾向についての研究の解釈は堅固である.

結論:

  • 温暖化への生態学的反応を理解するために マイクロ気候データは極めて重要です
  • 熱親化と気候変動が森林の植物に与える影響に関する調査の結論は支持されています.
  • 将来の研究は,生態学的評価のために微気候データを優先すべきです.