EFFECTS OF POTASSIUM ON THE NITROGENOUS CONSTITUENTS OF <i>ANANAS COMOSUS</i> (L.) MERR

Sideris, C. P.; Young, H. Y.

doi:10.1104/pp.21.2.218

Cited by 14 publications

(11 citation statements)

References 13 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The higher contents of a-amino and amide nitrogen in leaves of K1 are in agreement with observations of some other investigators (6,17,30,39). GREGORY (13) has held the view that such accumulation in the older leaves results from protein degradation, since these accumulations have sometimes been accompanied by lower protein contents.…”

Section: Nitrogenous Fractions Of the Leavessupporting

confidence: 80%

“…However, it has been foundby several workers (6,17,39) that although the protein content of potassium deficient leaves may be relatively high, the protein contents of the stems of these plants is frequently reduced. The protein concentrations in the guayule stems were not estimated, but it seems pertinent to note that growth in diameter of the low potassium stems was curtailed, whereas growth in length was not (8, In the high potassium treatments (K3 and NaK3) expanding leaves had significantly less assimilated nitrogen and significantly more nitrate than expanding leaves of other treatments.…”

Section: Nitrogenous Fractions Of the Leavesmentioning

confidence: 99%

See 1 more Smart Citation

Effects of Potassium Deficiency and Excess Upon Certain Carbohydrate and Nitrogenous Constituents in Guayule

Cooil¹,

Slattery²

1948

Plant Physiol.

View full text Add to dashboard Cite

The nature of the carbohydrates of translocation and the reserve carbohydrates in guayule has only recently been elucidated. McRARY and TRAUB (28) isolated a fructosan, tentatively identified as inulin, and HAS- SID et al. (19) definitely characterized this substance as inulin. Later, TRAUB and SLATTERY (41) showed that in addition to inulin, levulins are also present in guayule tissue, and in relatively greater amounts. TRAUB aid SLATTERY (41) also indicated the importance of relating the 89 per cent.ethanol soluble and insoluble levulins to planit functioning. TRAUB, SLAT-TERY and WALTER (42) have shown that the carbohydrates of translocation in guayule are apparently the free reducing sugars since they are always present in relatively small amounts in the roots, stems alnd branches but predominate in the leaves. These workers have also shown that of the total free reducing sugars, the amounts of free nion-fructose sugars are always greater than the amounits of free fructose in spite of the fact that the chief reserve carbohydrates in guayule are polymers of fructose, levulins and inulin. The coniditions of the present experiment were not conducive to large accumulations of inulin, or higher polymer levulins, insofar as the experiment consisted of a phase of rapid growth.So far as the writers are aware, no detailed study has been made of the nitrogenous fractions in guayule.Effects of potassium supply upon growth responses and mineral contents of guayule plants and upon cation and inorganic and organic aniion contents of the leaves have been reported (8,9). In this paper are considered carbohydrate and nitrogenous fractions in tissues of the same plants. Carbohydrate fractionis in plants grown with and without potassium are also reported. MethodsThe miiethods employed in growing the plants have been described (8).

show abstract

Section: Nitrogenous Fractions Of the Leavessupporting

confidence: 80%

Section: Nitrogenous Fractions Of the Leavesmentioning

confidence: 99%

Effects of Potassium Deficiency and Excess Upon Certain Carbohydrate and Nitrogenous Constituents in Guayule

Cooil¹,

Slattery²

1948

Plant Physiol.

View full text Add to dashboard Cite

show abstract

“…The low-N cultures in the same series lacked in nitrate because of the small external supply. Of course the cultures in the ammonium-N series were completely devoid of nitrate, which is in agreement with previous finidings (30,33,34 …”

Section: Total Nitrogensupporting

confidence: 79%

“…PROTEIN-N Proteini-\N for the high-N cultures was greater in the ammiioniumii than niitrate-N seriets (fi(g. (30,33,34) showed that NH4; is assimilated by time root tissues of A. contosius almost as soon as it is absorbed alnd coniverted to amide-N, amnino-N and protein-N, whereas NO,-is translocated fronm the roots to the nlon-ehlorophyllous regionis of the leaves in the original state and assimiiilated in the chlorophyllous regions. VICKERY et (ll.…”

Section: Amide-nmentioning

confidence: 99%

Effects of Nitrogen on the Nitrogenous Fractions of Ananas comosus (L.) Merr.

1947

Self Cite

View full text Add to dashboard Cite

“…Very recently SIDERIS and YOUNG (42,43,44) have dealt with several aspects of the problem. HOAGLAND (19) has pointed out that at one time or another a role in almost every important physiological process in the plant has been ascribed to potassium.…”

mentioning

confidence: 99%

Potassium Deficiency and Excess in Guayule I. Growth Responses and Mineral Content

Cooil¹

1948

Plant Physiol.

View full text Add to dashboard Cite

The extensive literature dealing with the role of potassium in plant metabolism has been reviewed by HOFFER (20), by various authors (47) in a recent symposium and in several reviews on mineral nutrition of plants (11,17,18,28,39,46). Very recently SIDERIS and YOUNG (42,43,44) have dealt with several aspects of the problem. HOAGLAND (19) has pointed out that at one time or another a role in almost every important physiological process in the plant has been ascribed to potassium. Yet, the mechanism of its role in any specific process has not been elucidated.In several respects the guayule plant, Parthenium argentatum A. Gray, differs from most of the plants which have been subjected to detailed nutritional study. For example, incidence of the reproductive phase in guayule is not attended by cessation of vegetative growth nor by curtailed nutrient absorption. This behavior is contrasted with that of many annual plants, for which a period of rapid growth and mineral absorption is terminated by the reproductive phase. NIGHTINGALE et al. (31) found that a deficiency of potassium in tomato plants induced premature fruiting. The result was withdrawal of a large portion of the potassium from the vegetative parts to the fruits. RICHARDS and TEMPLEMAN (40) found that for the barley plant potassium deficiency resulted in continued tillering and failure of plants to head. The sodium content of the nutrient solutions appears to be a factor associated with the latter result (39). No effects analogous to the premature fruiting of tomato plants or to the retarded heading of barley plants are evident for guayule moderately deficient in potassiuim. The use of guayule plants in a study of potassium nutrition, therefore, has the advantage of permitting comparison between plants which are in different nutritional states, without complications of premature or delayed incidence of the reproductive phase.

show abstract

EFFECTS OF POTASSIUM ON THE NITROGENOUS CONSTITUENTS OF ANANAS COMOSUS (L.) MERR

Cited by 14 publications

References 13 publications

Effects of Potassium Deficiency and Excess Upon Certain Carbohydrate and Nitrogenous Constituents in Guayule

Effects of Potassium Deficiency and Excess Upon Certain Carbohydrate and Nitrogenous Constituents in Guayule

Effects of Nitrogen on the Nitrogenous Fractions of Ananas comosus (L.) Merr.

Potassium Deficiency and Excess in Guayule I. Growth Responses and Mineral Content

Contact Info

Product

Resources

About