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相关概念视频

Adaptations that Reduce Water Loss01:57

Adaptations that Reduce Water Loss

25.1K
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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Introduction to Plant Diversity02:22

Introduction to Plant Diversity

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From Water to Land
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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.
10.6K
Regulation of Transpiration by Stomata02:04

Regulation of Transpiration by Stomata

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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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Light Acquisition02:16

Light Acquisition

8.4K
In order to produce glucose, plants need to capture sufficient light energy. Many modern plants have evolved leaves specialized for light acquisition. Leaves can be only millimeters in width or tens of meters wide, depending on the environment. Due to competition for sunlight, evolution has driven the evolution of increasingly larger leaves and taller plants, to avoid shading by their neighbors with contaminant elaboration of root architecture and mechanisms to transport water and nutrients.
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C4 Pathway and CAM01:27

C4 Pathway and CAM

45.3K
Most plants use the C3 pathway for carbon fixation. However, some plants, such as sugar cane, corn, and cacti that grow in hot conditions, use alternative pathways to fix carbon and conserve energy loss due to photorespiration. Photorespiration is the process that occurs when the oxygen concentration is high. Under such conditions, the rubisco enzyme in the Calvin cycle binds O2 instead of CO2, which halts photosynthesis and consumes energy.
C4 Pathway
The C4 pathway is used by plants such as...
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相关实验视频

Updated: Jun 7, 2025

Imaging and Analysis for Quantifying Maize (Zea mays) Abiotic Stress Phenotypes
06:41

Imaging and Analysis for Quantifying Maize (Zea mays) Abiotic Stress Phenotypes

Published on: March 28, 2025

719

一种特定于Zea种类的微可以控制玉米核的脱水

Yanhui Yu1, Wenqiang Li1, Yuanfang Liu1

  • 1National Key Laboratory of Crop Genetic Improvement, Huazhong Agricultural University, Wuhan, Hubei 430070, China; Hubei Hongshan Laboratory, Wuhan, Hubei 430070, China.

Cell
|November 13, 2024
PubMed
概括

研究人员发现了一种新的微, microRPG1, 这一发现为改善玉米KDR和作物育种提供了一个工具.

关键词:
一个新的起源乙烯不敏感的3类核的脱水率玉米机械收获微非编码序列消音器

更多相关视频

Kinematic Analysis of Cell Division and Expansion: Quantifying the Cellular Basis of Growth and Sampling Developmental Zones in Zea mays Leaves
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Kinematic Analysis of Cell Division and Expansion: Quantifying the Cellular Basis of Growth and Sampling Developmental Zones in Zea mays Leaves

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Using Ustilago maydis as a Trojan Horse for In Situ Delivery of Maize Proteins
05:38

Using Ustilago maydis as a Trojan Horse for In Situ Delivery of Maize Proteins

Published on: February 8, 2019

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相关实验视频

Last Updated: Jun 7, 2025

Imaging and Analysis for Quantifying Maize (Zea mays) Abiotic Stress Phenotypes
06:41

Imaging and Analysis for Quantifying Maize (Zea mays) Abiotic Stress Phenotypes

Published on: March 28, 2025

719
Kinematic Analysis of Cell Division and Expansion: Quantifying the Cellular Basis of Growth and Sampling Developmental Zones in Zea mays Leaves
08:31

Kinematic Analysis of Cell Division and Expansion: Quantifying the Cellular Basis of Growth and Sampling Developmental Zones in Zea mays Leaves

Published on: December 2, 2016

10.8K
Using Ustilago maydis as a Trojan Horse for In Situ Delivery of Maize Proteins
05:38

Using Ustilago maydis as a Trojan Horse for In Situ Delivery of Maize Proteins

Published on: February 8, 2019

11.4K

科学领域:

  • 植物生物学
  • 遗传学
  • 农业科学

背景情况:

  • 核脱水率对玉米生产至关重要,影响收获和质量.
  • 控制KDR的遗传和分子机制尚未完全理解.

研究的目的:

  • 阐明玉米内核脱水率的分子机制.
  • 确定调节KDR的遗传因素.

主要方法:

  • 定量特征位点 (QTL) 分析以确定qKDR1.
  • 对RPG和下游目标的基因表达分析.
  • 在基因淘汰和过度表达研究中使用CRISPR-Cas9.
  • 在玉米和Arabidopsis中进行生理分析.

主要成果:

  • 一个新的定量特征位点qKDR1被确定为调节RPG表达的非编码序列.
  • 通过调节乙烯信号基因 (ZmEIL1和ZmEIL3) 控制KDR的31氨基酸微.
  • 微RPG1是特定于Zea属的,并且是de novo产生的;它的缺失加速KDR,而它的存在或过度表达则减缓KDR.

结论:

  • 这项研究揭示了microRPG1调节玉米核脱水的分子机制.
  • microRPG1为基因工程提供了有价值的目标,以增强KDR和改善玉米育种,以提高作物质量和收获能力.