一年生植物と多年生植物の寒さに対する花の反応を変化させる制御回路

Youbong Hyun¹, Coral Vincent¹, Vicky Tilmes¹

¹Max Planck Institute for Plant Breeding Research, Carl-von-Linne-Weg 10, D50829, Germany.

Science (New York, N.Y.)

|January 26, 2019

まとめ

植物の生殖戦略は異なっています一年生は早く開花し,多年生は遅く開花しますこの研究により寒さや年齢によって異なる開花経路がクルシファーの様々なライフサイクルを形作っていることが明らかになりました

科学分野:

植物生殖生物学
分子遺伝学
進化植物学

背景:

植物の生育戦略は大きく異なり,一年生は急速な繁殖を優先し,多年生は遅い空間的に制限された開花を採用します.
これらの異なる生殖戦略の根底にある遺伝的および分子的メカニズムを理解することは,植物科学と農業にとって極めて重要です.

研究の目的:

一年生と多年生クロシファーの生殖パターンの差異の遺伝的根拠を調査する.
生命史の違いを媒介する特定の開花経路とインテグレーターの役割を明らかにする.

主な方法:

CRISPR/Cas9の遺伝子編集を用いて精密な遺伝子改変を行いました
保存され,異なった規制要素を研究するために,種間遺伝子の移転を使用した.
環境 (冬の寒さ) と植物の年齢/組織型との関係で分析された開花反応.

主要な成果:

多年生*アラビス・アルピーナ*では,開花は冷たく誘発され,古い組織ではSQUAMOSA PROMOTER BINDING PROTEIN-LIKE 15 (SPL15) によって調節される.
一年生は制御系が保たれているが,SPL15とは無関係に,光周期経路で若い芽で開花する.
多年生植物の年次開花を再構成すると,生命の歴史の分岐に寄与する並列経路が浮き彫りにされる.

結論:

一年生植物と多年生植物の独特の生殖パターンは,平行開花経路への依存の違いによって形成されます.
SPL15のような花の統合因子の年齢依存的調節は,多年生花の戦略において重要な役割を果たします.
これらの経路を理解することで植物の適応と進化の多様化に関する洞察が得られます

さらに関連する動画

08:42

Forced Flowering in Mandarin Trees under Phytotron Conditions

Published on: March 6, 2019

9.4K

07:22

Generating Homo- and Heterografts Between Watermelon and Bottle Gourd for the Study of Cold-responsive MicroRNAs

Published on: November 20, 2018

8.0K

関連する概念動画

02:45

Responses to Heat and Cold Stress

14.8K

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.

14.8K

02:40

Pollination and Flower Structure

75.5K

Flowers are the reproductive, seed-producing structures of angiosperms. Typically, flowers consist of sepals, petals, stamens, and carpels. Sepals and petals are the vegetative flower organs. Stamens and carpels are the reproductive organs.

75.5K

02:00

Photoreceptors and Plant Responses to Light

28.4K

Light plays a significant role in regulating the growth and development of plants. In addition to providing energy for photosynthesis, light provides other important cues to regulate a range of developmental and physiological responses in plants.

28.4K

01:20

Frequency Response of a Circuit

708

Inductive circuits present intriguing challenges in electrical engineering, particularly during the transition from the time domain to the frequency domain. This transformation involves converting inductors into impedances and utilizing phasor representation.
The transfer function is pivotal in characterizing how these circuits react to various frequencies, facilitating a profound understanding of their behavior. An essential parameter is the time constant, signifying the...

708

02:36

Meristems and Plant Growth

49.4K

Plants grow throughout their lives; this is called indeterminate growth, and it distinguishes plants from most animals. Although certain parts of plants stop growing (e.g., leaves and flowers), others grow continuously—like roots and stems.

49.4K

02:02

Cis-regulatory Sequences

11.8K

Cis-regulatory sequences are short fragments of non-coding DNA that are present on the same chromosomes as the genes that they regulate. These fragments serve as binding sites for transcriptional regulators, proteins that are responsible for controlling gene transcription and differential gene expression across cell types in eukaryotes. Cis-regulatory sequences can be close to the gene of interest or thousands of bases away in the DNA sequence; however, those sequences that are further away are...