Ethylene and Abscissic acid Flashcards Preview

EEB 162 > Ethylene and Abscissic acid > Flashcards

Flashcards in Ethylene and Abscissic acid Deck (16):
1

ethylene production increases during leaf --, flower senescence and fruit ripening

abscission

2

ethylene can be induced by wounding or --

stresses

3

fruit ripening includes softening of cell walls, hydrolysis of starch, sugar --, and disappearance of organic acids

accumulation

4

fruits that ripen in response to ethylene exhibit a rise in respiration before ripening called

climacteric

5

bananas, avocados, tomatos

climacteric

6

citrus and grapes

nonclimacteric

7

treating climacteric fruits with ethylene induces fruit to produce additional ethylene

autocatalytic

8

low O2, -- temp, and vacuum slow fruit ripening

low

9

ethylene induces -- flooding response in which leaves curve downward (upper side of petiole grow faster)

epinasty

10

ethylene changes directionality of plant cell expansion by causing the -- in cell wall to change orientation

cellulose microfibrils

11

hormone associated with dormancy and stress

ABA

12

ABA is -- in vascular plants

ubiquitous

13

ABA is a -- carbon compound with one ring

15

14

ABA is transported in the xylem and phloem but much more abundant in --

phloem sap

15

ABA content of seeds is -- in early embryogenesis

low

16

ABA inhibits precocious germiantion and -- (spreading of seeds on plant)

vivipary