深圳大学：《植物生理学 Plant Physiology》课程教学资源（PPT课件）Chapter06 植物体内有机物的转化和运输 Organics transport

chapter 6 Organics transport

chapter 6 Organics transport

Organics transport pathway and solutes。 Organics transport mechanism in the phloem Factors affecting the organics transport Translocation of the organics

➢ Organics transport pathway and solutes. ➢ Organics transport mechanism in the phloem. ➢ Factors affecting the organics transport. ➢ Translocation of the organics

Transport pathway--through Phloem (A)

Transport pathway —through Phloem

桃树茎横切 对次生木质部 年轮线 形成层 次生韧皮部 周皮

Phhoem anatomy Phloem Cambial 圆 reglon Xylem 1o0 ums

Phhoem anatomy

(b) Effects of girdling the trunk of a tree (a) at the beginning (b)swelled bark above

Effects of girdling the trunk of a tree (a) at the beginning (b) swelled bark above

The structure of phloem tissue SE-CC complex Conce Sieve element (se): conducting cell connected through specialized sieve plates. companion cell(CC): intimately associated with the Se, provide metabolic support for se

The structure of phloem tissue SE—CC complex ➢ Sieve element (SE): conducting cell connected through specialized sieve plates. ➢ companion cell (CC): intimately associated with the SE, provide metabolic support for SE

sieve plate pore of sieve plate sieve tube member companion cell companion cell pore of sieve plate Figure 19.6 Mature sieve tube member and adjacent companion cell. The inset shows one type of sieve plate

KAtudying the transported solutes 1 mm

Studying the transported solutes

Studying the transported solutes Aphids(蚜虫) feeding on plants by inserting a long mouthpart into SE cut the mouthpart Pholem sap exude

Studying the transported solutes Aphids (蚜虫) feeding on plants by inserting a long mouthpart into SE cut the mouthpart Pholem sap exude