The Effect of Moisture Stress on Nursery–grown Guayule With Reference to Changes in Reserve Carbohydrates

Traub, Hamilton P.; Slattery, Michael C.; McRary, W. L.

doi:10.1002/j.1537-2197.1946.tb12928.x

Cited by 5 publications

(5 citation statements)

References 14 publications

(9 reference statements)

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“…The pentosans imbibe water and apparently retard its loss. TRAUB et al (18) reported a similar situation for guayule. They also found that during periods of exceptionally high moisture supply the plant apparently loses its ability to produce the polysaccharide inulin.…”

Section: Introductionmentioning

confidence: 60%

SOME RELATIONSHIPS BETWEEN XEROPHYTISM AND THE CONTENT OF RESIN, NORDIHYDROGUAIARETIC ACID AND PROTEIN OF LARREA DIVARICATA CAV

Duisberg¹

1952

Plant Physiol.

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Section: Introductionmentioning

confidence: 60%

SOME RELATIONSHIPS BETWEEN XEROPHYTISM AND THE CONTENT OF RESIN, NORDIHYDROGUAIARETIC ACID AND PROTEIN OF LARREA DIVARICATA CAV

Duisberg¹

1952

Plant Physiol.

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“…If sucrose be present, it would constitute a minor fraction of the whole. Work reported elsewhere (39,40) shows that the values for levulins in guayule tissue are greater than those for inulin. The reserve polysaccharides in guayule from the standpoint of solubility in cold and hot water therefore are similar to those found in the tubers of the girasole, H. tuberosus, also a Composite, as previously reported by WILLAMAN (43) and TRAUB et al (42).…”

Section: Plant Piiysiologymentioning

confidence: 84%

“…Further work on the water soluble reserve carbohydrates of guayule has shown that in addition to inulin, levulins are also present, and in relatively greater amounts. The application of the principles developed in the present paper to physiological research problems by the authors and others (39,40,3,5,6,7) has shown that the fractionation of the levulins into 89% ethanol soluble and insoluble portions may be used as a more dynamic tool in plant physiological research than the mere recording of total residues. The preliminary results concerning the free monosaccharides in guayule and the analytical methods for determining the water soluble carbohydrates in guayule are slummarized elsewhere (41, 39).…”

mentioning

confidence: 76%

“…The corresponding values for 1% HCl are slightly higher than those indicated for top invertase. It may be of interest to note that ADAMS, RICHTMYER and HUDSON (1) report that the pH conditions for the maximum hydrolysis of sucrose, raffinose and inulin differ, and conclude that a specific injilase -rather than a ,3-D-fructofuranosidase is responsible for inulin hydrolysis (3,5,6,7,38,39,40). The making of such measurements has proved to be a more dynamic, and therefore a more valuable tool in physiological research than the analysis of total cold water soluble polysaccharides alone.…”

Section: Hydrolysis Of Levulinsmentioning

confidence: 99%

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Levulins and Inulin in Guayule, Parthenium argentatum A. Gray

Traub

Slattery

1947

Plant Physiol.

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Recently McRARY and TRAUB (16) isolated a fructosan, or levulosan, tentatively identified as inulin, from guayule plants. Later HASSID et al. (11) definitely characterized this fructosan as inulin. Further work on the water soluble reserve carbohydrates of guayule has shown that in addition to inulin, levulins are also present, and in relatively greater amounts. The application of the principles developed in the present paper to physiological research problems by the authors and others (39,40,3,5,6,7) has shown that the fractionation of the levulins into 89% ethanol soluble and insoluble portions may be used as a more dynamic tool in plant physiological research than the mere recording of total residues. The preliminary results concerning the free monosaccharides in guayule and the analytical methods for determining the water soluble carbohydrates in guayule are slummarized elsewhere (41, 39).According to McRARY and SLATTERY (15), continuous extraction, for six hours, of the finely ground guayule tissue when 80% ethanol by volume is placed in the boiling flask of the extraction apparatus (Landsiedl type), completely removes the "reducing sugars and sucrose" leaving the "fructosan" in the insoluble residue. Under the conditions indicated, it should be pointed out that the condensate dripping into the extraction cups is approximately 89% ethanol by volume (9) and is approximately at the boiling point of the solvent. In order to show that the interpretation of McRARY and SLATTERY (15) is untenable, previous work on the naturally occurring polysaccharides in some Compositae will be briefly reviewed, the water soluble carbohydrate reserves in guayule will be considered, and the fractions separated from guayule by McRARY and SLATERY (15) will be critically examined. Previous workIn 1870, Popp (24) reported a "soluble modification of inulin" in the tubers of Heltiacrthu,s tubTerosus which he named "inuloid." Since that date apparently the nature of the inulides (inuloid) or levulins in plants and their relation to inulin, and also the characteristics of inulin as it occurs in nature, were little understood until the subject was elucidated in 1932-1933 by SCHiUBACa and KNOOP (30).Although TANRET (35,36) in 1893 reported that he was able to separate from inulin associated matter (pseudo-inulin, mol. wt. 2610; inulenin, mol.

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“…Indeed it is remarkable that the plants in treatments IV and V grew so well under the severe moisture conditions to which they were subjected. Traub, Slattery, and McRary (1946) used samples of plants from the plots in the experiment of Hunter and Kelley (1946). These authors speak about high, intermediate, and low moisture stress, probably with the intent to indi cate that differences would occur within the plant if the soil moisture were maintained above different levels between field capacity and PWP.…”

Section: Hilgaräiamentioning

confidence: 99%

Responses of a plant to soil-moisture changes as shown by guayule

Veihmeyer¹,

Hendrickson²

1961

Hilg

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AVAILABILITY of soil moisture to plants has been widely discussed. Experi ments by the present writers have led to the conclusion that moisture is readily available to supply water for all plant functions so long as the moisture content of the soil that is in contact with the absorbing portion of the roots is not reduced to the permanent wilting percentage (PWP). Op posing opinions have argued that, theoretically, water cannot be readily available to plants over the range from field capacity to the P W P be cause of the excessive amount of energy required to remove water from soil that is near the PWP. Veihmeyer and Hendrickson (1950)* and Veihmeyer (1956) have shown that such is not the case. Lack of water for trans piration and others needs of the plant's growth, however, may result from slow movement of roots into moist soil from a region of dry soil. Also, changes may be induced within the plant by low soil-moisture conditions, and these may limit the plant's ability to absorb water. Whether the latter fac tors are limiting conditions in the uptake of water by the plants can only be answered satisfactorily by empirical trials. Reviews by Richards and Wadleigh (1952), Veihmeyer and Hendrickson (1950), and Veihmeyer (1956) present the main arguments as to whether or not soil moisture is readily available to plants throughout the range from field capacity to the PWP. The present study is confined to the responses of guayule (Parthenium argentatum) to different soil-moisture conditions. REVIEW O F THE LITERATURE Wadleigh, Gauch, and Magistad (1946) conducted experiments to determine the effect of salinity on plant responses. These workers used guayule plants grown in 10-gallon steel drums holding about 100 pounds of dry soil. Three

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The Effect of Moisture Stress on Nursery–grown Guayule With Reference to Changes in Reserve Carbohydrates

Cited by 5 publications

References 14 publications

SOME RELATIONSHIPS BETWEEN XEROPHYTISM AND THE CONTENT OF RESIN, NORDIHYDROGUAIARETIC ACID AND PROTEIN OF LARREA DIVARICATA CAV

SOME RELATIONSHIPS BETWEEN XEROPHYTISM AND THE CONTENT OF RESIN, NORDIHYDROGUAIARETIC ACID AND PROTEIN OF LARREA DIVARICATA CAV

Levulins and Inulin in Guayule, Parthenium argentatum A. Gray

Responses of a plant to soil-moisture changes as shown by guayule

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