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第三篇 植物的生长和发育 PowerPoint PPT Presentation


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. 第三篇 植物的生长和发育. 生长 :是植物体积的增大,它是通过虚报分裂和扩大来完成的。 发育 :指细胞、组织和器官的分化。. 第七章 细胞信号转导. 教学内容. 环境刺激和胞外信号 受体和跨膜信号转换 细胞信号分子和第二信使系统 信号转导中的蛋白质可逆磷酸化. 重点: 细胞受体的基本特性;细胞信号转导的作用方式;钙调蛋白的作用机理。 难点: 细胞受体的基本特性;细胞信号转导的作用方式。. 生长发育是基因在一定时间、空间上顺序表达的过程,而基因的表达则受遗传因素和周围环境的调控。

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第三篇 植物的生长和发育

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.




.



  • signal transduction


.

  • 4

    1

    2

    3

    4


G

Ca2+/CaM IP3/DAG


(signals)


  • ligand

ABA

CTK


  • (PIs)

  • PIs

PIs

PIs

()PIsPIs

PIs



.

  • 2.

  • ()()


.

1.(receptor

+

-


2.

1

2

3


3.

1

2


  • transmenbrane transduction):

  • G


.

  • HK)

    RR)


.

  • HK:HPKRR.

  • RR


A

B


  • RLK

  • RLK/


  • /

    RLK3

SRLK

RLK

RLK



network)


.

  • primary signal

  • secondary messengersecondary messenger

  • Ca2+ cAMP cGMPH


.

Ca2+/CaM

1. Ca2+

  • Ca2+0.1mol/L

    Ca2+2-5

    Ca2+

  • Ca2+Ca2+


  • 2. CaM

  • 4.016.7103148Ca2+CaM4Ca2+

  • CaMCDPK BCBL


CaM:

Ca2+Ca2+/CaM

,,


3.Ca2+/CaM

  • Ca2+-ATPCa2+NAD


4Ca2+/ CaM

1Ca2+

0.1umol/l Ca2+

  • Ca2+2


2

  • A Ca2+Ca2+Ca2+Ca2+

  • BCa2+Ca2+

    Ca2+/H+Ca2+

  • Ca2+Ca2+Ca2+Ca2+/H+Ca2+

  • Ca2+Ca2+-ATP



.

IP3DAG

IP3DAG


2.IP3/ DAG

1IP3/Ca2+

  • IP3IP3/ Ca2+Ca2+Ca2+

  • IP3Ca2+Ca2+IP3/ Ca2+


2DAG/PKC

  • DAG C PKC PKCGC

  • DAGPKCDAG/PKC


3.IP3DAG

  • PIP2-4-IP33-DAG,IP3/ Ca2+DAG/PKC


PIP2C PKC

DAG

G

IP3

----------------

Ca2+

IP3 IP3

Ca2+


.


  • phosphatase, PP

  • (phosphorylation) protein kinase, PK

  • ATPGTP


.

n NTP n NDP

-n Pi

n Pi H2O



  • Ca2+Ca2+/ CaMCDPKMAPKMAPK MAPKK MAPKKK


.

  • MAPK MAPK


.


  • protein kinasePK

  • 2%-3%

  • /


  • /


  • 1.(CDPK)

  • /

  • 10CDPK

    CDPK

  • CDPKs

    ATP


CDPK-

(31 a.a)

N C

(508)

CaMCaM


  • (protein phosphatase PP

  • /PP1PP2


  • E2E326S


  • GA+CIDI)

+SCFE3

DELLA(GA


+


1GG

2CDPK

3GAJA


  • 20-30d


  • Login