Photosynthesis (The Path of Carbon in Photosynthesis and thePrimary Quantum Conversion Act of Photosynthesis)

Calvin, Melvin

doi:10.2172/915411

Title: Photosynthesis (The Path of Carbon in Photosynthesis and thePrimary Quantum Conversion Act of Photosynthesis)

Full Record
Other Related Research

Abstract

This constitutes a review of the path of carbon in photosynthesis as it has been elaborated through the summer of 1952, with particular attention focused on those aspects of carbon metabolism and i t s variation which have led to some direct information regarding the primary quantum conversion act. An introduction to the arguments which have been adduced in support of the idea that chlorophyll i s a physical sensitizer handing i t s excitation on to thioctic acid, a compound containing a strained 1, 2 -dithiolcyclopentane ring, i s given.

Authors:: Calvin, Melvin

Publication Date:: Sat Nov 22 00:00:00 EST 1952

Research Org.:: Lawrence Berkeley National Laboratory (LBNL), Berkeley, CA (United States)

Sponsoring Org.:: USAEC

OSTI Identifier:: 915411

Report Number(s):: UCRL-2040
TRN: US200817%%507

DOE Contract Number:: DE-AC02-05CH11231

Resource Type:: Technical Report

Country of Publication:: United States

Language:: English

Subject:: 59 BASIC BIOLOGICAL SCIENCES; CARBON; CHLOROPHYLL; EXCITATION; METABOLISM; PHOTOSYNTHESIS; SENSITIZERS; THIOCTIC ACID

Citation Formats


                    Calvin, Melvin. Photosynthesis (The Path of Carbon in Photosynthesis and thePrimary Quantum Conversion Act of Photosynthesis).  United States: N. p., 1952. 
        Web.  doi:10.2172/915411.

Copy to clipboard


                    Calvin, Melvin. Photosynthesis (The Path of Carbon in Photosynthesis and thePrimary Quantum Conversion Act of Photosynthesis).  United States.  https://doi.org/10.2172/915411

Copy to clipboard


                    Calvin, Melvin. 1952.  
        "Photosynthesis (The Path of Carbon in Photosynthesis and thePrimary Quantum Conversion Act of Photosynthesis)".  United States.  https://doi.org/10.2172/915411.  https://www.osti.gov/servlets/purl/915411.

Copy to clipboard


                    
@article{osti_915411,

  title        = {Photosynthesis (The Path of Carbon in Photosynthesis and thePrimary Quantum Conversion Act of Photosynthesis)},

  author       = {Calvin, Melvin},

  abstractNote = {This constitutes a review of the path of carbon in photosynthesis as it has been elaborated through the summer of 1952, with particular attention focused on those aspects of carbon metabolism and i t s variation which have led to some direct information regarding the primary quantum conversion act. An introduction to the arguments which have been adduced in support of the idea that chlorophyll i s a physical sensitizer handing i t s excitation on to thioctic acid, a compound containing a strained 1, 2 -dithiolcyclopentane ring, i s given.},

  doi          = {10.2172/915411},

  url          = {https://www.osti.gov/biblio/915411},
  journal      = {},
number       = ,

  volume       = ,

  place        = {United States},

  year         = {Sat Nov 22 00:00:00 EST 1952},

  month        = {Sat Nov 22 00:00:00 EST 1952}

}

Copy to clipboard

Technical Report:

View Technical Report (1.56 MB)

https://doi.org/10.2172/915411

Save / Share:

Export Metadata

Save to My Library

Similar records in OSTI.GOV collections:

The Chemistry of 1,2-Dithiolane (Trimethylene Disulfide) As aModel for the Primary Quantum Conversion Act in Photosynthesis

Technical Report Barltrop, J; Hayes, P; Calvin, M

Some chemical and photochemical observations of 1,2-dithiolane and its derivatives are reported with particular reference to the possible mode of function of the naturally occurring system, 6-thioctic acid. Experimental evidence is presented to demonstrate that the strain energy in this 5-membered ring is not less than 6.5 Kcals and probably larger. Reagents which both oxidize and reduce this ring are described together with the conditions required for its reformation from the corresponding dithiol. Evidence is adduced to indicate that the primary product of photolysis of this ring in acetic media is very likely a thiol and sulfenic acid or derivativemore » thereof.« less
https://doi.org/10.2172/915419

Full Text Available
THE PATH OF CARBON IN PHOTOSYNTHESIS

Technical Report Calvin, Melvin

It is almost sixty years since Emil Fischer was describing on a platform such as this one some of the work which led to the basic knowledge of the structure of glucose and its relatives. Today we will be concerned with a description of the experiments which have led to a knowledge of the principal reactions by which those carbohydrate structures are created by photosynthetic organisms from carbon dioxide and water, using the energy of light. The speculations on the way in which carbohydrate was built from carbon dioxide began not long after the recognition of the basic reaction andmore »« less
https://doi.org/10.2172/928404

Full Text Available
Path of Carbon in Photosynthesis III

Technical Report Benson, A; Calvin, M

Although the overall reaction of photosynthesis can be specified with some degree of certainty (CO{sub 2} + H{sub 2}O + light {yields} sugars + possibly other reduced substances), the intermediates through which the carbon passes during the course of this reduction have, until now, been largely a matter of conjecture. The availability of isotopic carbon, that is, a method of labeling the carbon dioxide, provides the possibility of some very direct experiments designed to recognize these intermediates and, perhaps, help to understand the complex sequence and interplay of reactions which must constitute the photochemical process itself. The general design ofmore »« less
https://doi.org/10.2172/928029

Full Text Available
Systematically programmed adaptive evolution reveals potential role of carbon and nitrogen pathways during lipid accumulation in Chlamydomonas reinhardtii

Journal Article Velmurugan, Natarajan; Sung, Minji; Yim, Sung; ... - Biotechnology for Biofuels

Background: The concept of adaptive evolution implies underlying genetic mutations conferring a selective advantage to an organism under particular environmental conditions. Thus, a flow cytometry-based strategy was used to study the adaptive evolution in Chlamydomonas reinhardtii wild-type strain CC124 and starchless mutant sta6-1 cells, with respect to lipid metabolism under nitrogen-(N) depleted and -replete conditions. Results: The successive sorting and regeneration of the top 25,000 high-lipid content cells of CC124 and sta6-1, combined with nitrogen starvation, led to the generation of a new population with an improved lipid content when compared to the original populations (approximately 175% and 50% lipidmore »« less
https://doi.org/10.1186/s13068-014-0117-7

Full Text Available
PHOTOSYNTHESIS (THE PATH OF CARBON IN PHOTOSYNTHESIS AND THE PRIMARY QUANTUM CONVERSION ACT OF PHOTOSYNTHESIS)

Technical Report Calvin, M

Similar Records