The essential nature of certain minor elements for plant nutrition. II

Brenchley, Winifred E.

doi:10.1007/bf02861273

Cited by 7 publications

(2 citation statements)

References 76 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Brenchley (11) has published a supplement to an earlier review of the minor elements, with bibliography up to 1945. Interrelations of macronutrients have been summarized by Beeson (7) with special regard to the influence of fertilization on the contents of different mineral ele ments in the plants as well as on the Quality of the crops.…”

Section: Effects and Functions Of The Elementsmentioning

confidence: 99%

Mineral Nutrition of Plants

Burström¹

1948

Annu. Rev. Biochem.

View full text Add to dashboard Cite

Though a great number of papers on the mineral nutrition of plants appear every year, relatively few are of general theoretical interest. Most contributions deal with questions of practical and locally restricted importance. Some problems, viz., the mechanism of ion absorption and the demand of the plant for trace elements, have been attracting interest for several years. To some extent, agreement has been reached on the essentials of both problems. It would therefore be natural for attention to be focused upon the functions of the elements, but progress on this point is remarkably slow. Research at present is obviously not concentrated on any dominant question, which may be due to a lack of essential bio physical and enzyme-chemical methods: The above subjects were reviewed by Lundegardh (55); recent contributions as well as some problems of mineral transformations in the soil that are of im mediate physiological interest are summarized below. AVAILABILITY OF MINERAL NUTRIENTS IN THE SUBSTRATEAs it has been shown that ions adsorbed on colloids may be as readily available to plants as ions free in solution [see Arnon (1), Richards (68)], possibly by contact exchange with the roots, the question of the actual state of the ions in soils and artificial nu trient m edia deserves special attention, even though, as Lun a e gardh has pointed out (55), contact exchange differs quantita tively, not qualitatively, from the uptake from a solution.A rtificial colloidal media:-The method of incorporating arti ficial colloids carrying nutrient ions in sand cultures has been studied by Wittwer et al. (88)

show abstract

Section: Effects and Functions Of The Elementsmentioning

confidence: 99%

Mineral Nutrition of Plants

Burström¹

1948

Annu. Rev. Biochem.

View full text Add to dashboard Cite

show abstract

“…The effects of the various trace elements have been reviewed by several workers, among them Brenchley (1947) and Wallace (1950).…”

Section: Elementsmentioning

confidence: 99%

Plant morphogenesis

Sinnott¹

1960

255

View full text Add to dashboard Cite

Biological organization is to be seen most distinctly in bodily development. It is obvious that, to produce an individual with a specific form and structure, growth must be more rapid in some directions than in others and must form tissues and organs of different character in different places. Embryology has shown how precisely the activities in one part of the developing individual are related to those in every other part. Few happenings in nature are as fascinating to watch as the unfolding and morphology. More commonly and properly, however, it includes, in addition to a discussion of purely descriptive facts as to the origin of form, a study of the results of experimentally controlled development and an analysis of the effects of the various factors, external and internal, that determine how the development of form proceeds. In other words, it attempts to get at the underlying formativeness in the development of organisms and especially to reach an understanding of the basic fact of which form is the most obvious manifestation-biological organization Workers with plants have a number of advantages, however. In plants, permanently embryonic regions, the meristems, are available for study. At the tip of shoot and root and in the cambial layers these are indeterminate and produce new plant structures almost indefinitely. Such meristems are usually numerous or extensive on the same plant so that ample material for the study of development, identical in genetic constitution, is available. Growth and differentiation in the development of a plant are thus continuing processes and not limited to a single and often brief life cycle.Organs such as leaves, flowers, and fruits, which are determinate in growth, pass through a cycle closely comparable to that of individual animals, and morphogenetic problems can also often profitably be studied in them. The fact that they are usually produced in abundance on a single plant is a further advantage, for here the investigator need not be concerned about genetic diversity in his material but can study strictly The Cellular Basis of Growth 33 structures such as tubers and fruits, the greater size is due to an increase in both the number and the size of their cells. Lehmann (1926) found a positive correlation between the size of a potato tuber and that of its cells. Since the increase in cell size was by no means proportional to that in tuber size, it was evident that large tubers have more as well as larger cells. The same relations are found in tomatoes (Houghtaling, 1935). A more detailed study of this problem, in large-fruited and small-fruited races of gourds, was made by Sinnott (1939; Fig. 3-4). Here cell size increases in the young ovary but much less rapidly than organ size, showing that cell division is taking place. During this period there is more increase in cell size in the larger races. The size at which the cells divide steadily increases. At about the time of flowering, however, division in most of the young fruit ceases, first in the central region and then prog...

show abstract

Mineralstoffwechsel

Burström¹

1949

Fortschritte Der Botanik

View full text Add to dashboard Cite

The essential nature of certain minor elements for plant nutrition. II

Cited by 7 publications

References 76 publications

Mineral Nutrition of Plants

Mineral Nutrition of Plants

Plant morphogenesis

Mineralstoffwechsel

Contact Info

Product

Resources

About