The Effect of Leaf Age on the Rate of Photosynthesis in Detached Leaves of Tree Seedlings

Richardson, Sidney

doi:10.1111/j.1438-8677.1957.tb00592.x

Cited by 38 publications

(10 citation statements)

References 13 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…Thus aging leaves show a more rapid utilization of carbohydrates (14,16), more export of inorganic materials (2,15), and are less effective in photosynthesis (3,12). (c) Mlurneek has proposed that the developing embryos induce senescence in the parent plant.…”

Section: Discussionmentioning

confidence: 99%

Experimental Modification of Plant Senescence.

1959

View full text Add to dashboard Cite

show abstract

Section: Discussionmentioning

confidence: 99%

Experimental Modification of Plant Senescence.

1959

View full text Add to dashboard Cite

show abstract

“…Firstly, there is a decrease in the overall enzymatic capacity for photosynthesis (Smillie 1962) and of the enzyme carboxydismutase (Woolhouse 1967). Secondly, in aging leaves P N is correlated with RNA and protein content (Hardwick, Wood, and Woolhouse 1968), with protein metabolism (Richardson 1957;Rhodes and Yemm 1963), and with protein nitrogen content (Miyazaki and Tatemichi 1968;Tatemichi 1968). Furthermore, kinin analogues which prevent net protein breakdown also prevent the decline in P N with age (Natr 1967).…”

Section: (B) Differences Between Leaves On the Same Plantmentioning

confidence: 99%

Photosynthesis of Tropical Pasture Plants III. Leaf Age

Ludlow¹,

Wilson²

1971

Aust. Jnl. Of Bio. Sci.

View full text Add to dashboard Cite

AbstmctGrass and legume plants were grown under near-optimum conditions in controlled-environment cabinets. Changes in net photosynthetic rate, dark respiration rate, and carbon dioxide transfer resistances during leaf ontogeny, and variability between leaves on grass tillers and legume runners were studied under controlled conditions in an open gas analysis system.As leaves aged dark respiration rate, light compensation point, and light saturation point declined progressively, whereas the initial slope of the light response curve and net photosynthetic rate measured at 10,000 f.c. increased to a maximum before declining. Immediately after unfolding, grass leaves photosynthesized at a rate more closely approximating the maximum than legume leaves which had a relatively low rate initially. For both grasses and legumes, the lower photosynthetic rate of young leaves was accompanied by high mesophyll resistances, but the decline from the maximum rate as leaves aged was associated with increases in both stomatal and mesophyll resistances. Stomatal resistance exerted a major control over the net photosynthetic rate of grasses, whereas mesophyll resistance predominated for legumes.The influence of chlorophyll concentration_ on the relationship between net photosynthesis and leaf age is discussed.

show abstract

“…In leaves of dicotyledon plants after an initial rise (3), the photosynthetic capacity gradually declines after leaf expansion (6,16,19,20 …”

Section: Introductionmentioning

confidence: 99%

“…In leaves of dicotyledon plants after an initial rise (3), the photosynthetic capacity gradually declines after leaf expansion (6,16,19,20). This decline in CO. assimilation with age is parallel to a decrease in RNA, protein, and DNA contents of leaves (27).…”

mentioning

confidence: 99%

Functional and Structural Changes in Senescing Populus deltoides (Bartr.) Chloroplasts

Hernández-Gil¹,

Schaedle²

1973

Plant Physiol.

View full text Add to dashboard Cite

Chloroplasts isolated from Populus deltoides leaves were used to study age-dependent changes in the rate of cyclic photophosphorylation. Single leaves were used to measure C02 fixation by leaf discs, chlorophyll concentration, and ATP synthesis. The ability of chloroplasts to synthesize ATP diminished steadily from the time of full leaf expansion, regardless whether the results are expressed on a leaf area or chlorophyll basis. This decline in the rates of ATP synthesis was paralleled by the decline in the rate of C02 fixation. The results suggest that the efficiency of the membrane-bound ATP synthesizing system declines with age.Photosynthetic and respiratory rates vary with leaf age (8,13,14,22,23,26). In leaves of dicotyledon plants after an initial rise (3), the photosynthetic capacity gradually declines after leaf expansion (6,16,19,20

show abstract

The Effect of Leaf Age on the Rate of Photosynthesis in Detached Leaves of Tree Seedlings

Cited by 38 publications

References 13 publications

Experimental Modification of Plant Senescence.

Experimental Modification of Plant Senescence.

Photosynthesis of Tropical Pasture Plants III. Leaf Age

Functional and Structural Changes in Senescing Populus deltoides (Bartr.) Chloroplasts

Contact Info

Product

Resources

About