Accumulation and Translocation of Soluble Solids in Corn Stalks

Hume, D. J.; Campbell, D. K.

doi:10.4141/cjps72-056

Cited by 57 publications

(42 citation statements)

References 7 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…At full maturity, the proportion of labeled N entering kernel proteins reached 7% and was homogenous for each kind of protein except for glutelin G3 (1.4%). The distinctive behavior of labeling in each class is also observed when looking at natural abundance for C and N in control plants (Table IV) (13,19). In contrast, Yamagata et al (24) demonstrated that 96% of seed carbon originated from leaf photosynthesis after pollinization in soybean.…”

Section: Remobilization Of C and N Before Anthesismentioning

confidence: 93%

“…The changes in stalk carbohydrates and reduced nitrogen during stalk elongation show the stalk serves as a storage reservoir and these reserves are remobilized during the final stage of kernel development (1,3). However, translocation ofC and N have been often considered independently (11,13), even though metabolism of C and N are closely linked (3). Sucrose transfer from vegetative parts to the ear is linked to zein accumulation in maize kernels (21).…”

Section: Materials and Methods Plant Culture And Labeling Experimentsmentioning

confidence: 99%

See 1 more Smart Citation

C and N Mobilization from Stalk and Leaves during Kernel Filling by ¹³C and ¹⁵N Tracing in Zea mays L.

Cliquet

Deléens²,

Mariotti³

1990

Plant Physiol.

100

View full text Add to dashboard Cite

The sink capacity of the stalk in Zea mays L. (cv DEA) during the elongation period was previously investigated with 13C and 15N tracing. The chase experiment described here demonstrates the different behavior of intermediary reserves for C and N remobilization until full maturity of the kernels. Carbon incorporated during stalk elongation participated mainly in cellulose formation in vegetative organs appearing after the labeling period; the remobilization to kernels was low (0.5%). Soluble carbohydrates and proteins were the main intermediary sink compounds, starch being little remobilized. N first incorporated in roots, sheaths, stalk, blades was translocated to the kernel; 42% of the labeled N were recovered in kernels where they represented 8% of the total N. Cob, husk, and shank acted first as N sinks and then as N sources during ear development. It appeared that aminoacids used for synthesis of kemel proteins have a common origin, except for glutelin G3.vegetative parts for the development of the ear and to point out use of intermediary reserves of the stalk for kernel filling. MATERIALS AND METHODS Plant Culture and Labeling ExperimentMaize plants (Zea mays L., cv Dea) were grown in a greenhouse for 45 d. Control plants were maintained in the greenhouse while 15 other plants were put in a climatic chamber to assimilate '3C02 (1.2889 13C atom %) at 450 ppm in a controlled atmosphere and '5N-nitrates (1.9643 '5N atom %) in the nutrient solution (4), for an 8-d exposure. After the labeling, 3 plants were harvested and the 12 remaining plants continued their development in the greenhouse under previous conditions. The whole experimental procedure is detailed further in a previous paper (4). The use of stable isotope labeling at the natural abundance range and its use for estimation ofthe long-term partitioning was described previously (8, 9).The contribution of C and N reserves accumulated in the shoot to the ear growth is an important factor in crop yield (12,22). In maize, redistribution of carbon and nitrogen reserves from the senescent leaves to the kernel has already been reported (6,10

show abstract

Section: Remobilization Of C and N Before Anthesismentioning

confidence: 93%

Section: Materials and Methods Plant Culture And Labeling Experimentsmentioning

confidence: 99%

C and N Mobilization from Stalk and Leaves during Kernel Filling by ¹³C and ¹⁵N Tracing in Zea mays L.

Cliquet

Deléens²,

Mariotti³

1990

Plant Physiol.

100

View full text Add to dashboard Cite

show abstract

“…In contrast, Daynard et al (1969) and Hume and Campbell (1972) (Tollenaar and Daynard, 1982). Early et al (1967), Hanway (1969), Hicks et al (1977), Barnett and Pearce (1983) and Vasilas and Seif (1985) reported differential hybrid responses to treatments of source or sink limitation.…”

mentioning

confidence: 91%

Source-sink relationships in maize grown in a cool-temperate area

Uhart

Andrade

1991

Agronomie

View full text Add to dashboard Cite

show abstract

“…In Sorghum (Goldsworthy, 1970;Fischer & Wilson, 1971), it has been estimated that the utilization of stem reserves would account for about 12 % of the flnal grain weight, while in maize estimates for the use of stem resources range from 5 to 18% of the flnal grain weight (Daynard, Tanner & Hume, 1969;Hume & Campbell, 1972;Reed et al, 1988). As in wheat, a period of stress that causes a drop in photosynthesis results in a much greater reliance of grain growth on stored carbohydrate (McPherson & Boyer, 1977).…”

Section: The Xylem As An Alternative Transport Systemmentioning

confidence: 99%

Tansley Review No. 27 The control of carbon partitioning in plants

1990

View full text Add to dashboard Cite

Summary This review reports on the processes associated with carbon transfer and metabolism in leaves and growing organs and the role of long‐distance transport and vascular links in the regulation of carbon partitioning in plants. Partitioning is clearly influenced by both the supply and demand for photosynthate and is moderated by vascular connections and the storage capacity of the leaves and pathway tissues. However there appears to be little more than circumstantial evidence either that short distance transfer of carbon within either the source or the sink, or that long‐distance transport in the phloem, are limiting photosynthesis or growth directly. Although individual biochemical and physiological processes relating to photosynthesis and growth may be well understood, the factors primarily responsible for the control of carbon partitioning in plants have not been clearly identified. There is a need for a greater understanding of organ initiation and development (source and sink formation and potential size), the clear identification of whether growth is sink or source limited (including possible sink‐controlled photosynthesis) and a detailed assessment of the role of storage in buffering developmental and environmental changes in sink and source activity. Also more information is needed on the role of hormonal and nutritional factors in regulating source and sink activity (organ interactions not directly associated with carbon transfer).

show abstract

Accumulation and Translocation of Soluble Solids in Corn Stalks

Abstract: ABSTRACT

Cited by 57 publications

References 7 publications

C and N Mobilization from Stalk and Leaves during Kernel Filling by ¹³C and ¹⁵N Tracing in Zea mays L.

C and N Mobilization from Stalk and Leaves during Kernel Filling by ¹³C and ¹⁵N Tracing in Zea mays L.

Source-sink relationships in maize grown in a cool-temperate area

Tansley Review No. 27 The control of carbon partitioning in plants

Contact Info

Product

Resources

About

Accumulation and Translocation of Soluble Solids in Corn Stalks

Abstract: ABSTRACT

Cited by 57 publications

References 7 publications

C and N Mobilization from Stalk and Leaves during Kernel Filling by 13C and 15N Tracing in Zea mays L.

C and N Mobilization from Stalk and Leaves during Kernel Filling by 13C and 15N Tracing in Zea mays L.

Source-sink relationships in maize grown in a cool-temperate area

Tansley Review No. 27 The control of carbon partitioning in plants

Contact Info

Product

Resources

About

C and N Mobilization from Stalk and Leaves during Kernel Filling by ¹³C and ¹⁵N Tracing in Zea mays L.

C and N Mobilization from Stalk and Leaves during Kernel Filling by ¹³C and ¹⁵N Tracing in Zea mays L.