The effect of plant-hormone pretreatments on ethylene production and synthesis of 1-aminocyclopropane-1-carboxylic acid in water-stressed wheat leaves

Planta ◽  
1982 ◽  
Vol 155 (5) ◽  
pp. 437-443 ◽  
Author(s):  
Thomas A. McKeon ◽  
Neil E. Hoffman ◽  
Shang Fa Yang
Keyword(s):  
Carboxylic Acid ◽  
Ethylene Production ◽  
Plant Hormone ◽  
Wheat Leaves

scholarly journals The mechanism for brassinosteroids suppressing climacteric fruit ripening

2021 ◽  
Author(s):  
Yinglin Ji ◽  
Yi Qu ◽  
Zhongyu Jiang ◽  
Jijun Yan ◽  
Jinfang Chu ◽  
...  
Keyword(s):  
Transcription Factor ◽  
Carboxylic Acid ◽  
Fruit Ripening ◽  
Ethylene Production ◽  
Plant Hormone ◽  
Expression Profiles ◽  
Acc Synthase ◽  
Ethylene Biosynthesis ◽  
Pear Fruit ◽  
Climacteric Fruit

Abstract The plant hormone ethylene is important for the ripening of climacteric fruit, such as pear (Pyrus ussuriensis), and the brassinosteroid (BR) class of phytohormones affects ethylene biosynthesis during ripening via an unknown molecular mechanism. Here, we observed that exogenous BR treatment suppressed ethylene production and delayed fruit ripening, whereas treatment with a BR biosynthesis inhibitor promoted ethylene production and accelerated fruit ripening in pear, suggesting BR is a ripening suppressor. The expression of the transcription factor BRASSINAZOLE-RESISTANT 1PuBZR1 was enhanced by BR treatment during pear fruit ripening. PuBZR1 interacted with PuACO1, which converts 1-aminocyclopropane-1-carboxylic acid (ACC) to ethylene, and suppressed its activity. BR-activated PuBZR1 bound to the promoters of PuACO1 and of PuACS1a, which encodes ACC synthase, and directly suppressed their transcription. Moreover, PuBZR1 suppressed the expression of transcription factor PuERF2 by binding its promoter, and PuERF2 bound to the promoters of PuACO1 and PuACS1a. We concluded that PuBZR1 indirectly suppresses the transcription of PuACO1 and PuACS1a through its regulation of PuERF2. Ethylene production and expression profiles of corresponding apple (Malus domestica) homologs showed similar changes following epibrassinolide treatment. Together, these results suggest that BR-activated BZR1 suppresses ACO1 activity and the expression of ACO1 and ACS1, thereby reducing ethylene production and suppressing fruit ripening. This likely represents a conserved mechanism by which BR suppresses ethylene biosynthesis during climacteric fruit ripening.

Harvest maturity related changes in the cold-induced activation of 1-aminocyclopropane-1-carboxylic acid metabolism in Granny Smith apples / Efecto del estado de madurez sobre la activación por frío del metabolismo del ácido 1-aminociclopropano-1-carboxílico en manzanas Granny Smith

1999 ◽  
Vol 5 (3) ◽  
pp. 223-228 ◽  
Author(s):  
C. Larrigaudiere ◽  
I. Recasens ◽  
J. Graell ◽  
M. Vendrell
Keyword(s):  
Carboxylic Acid ◽  
Ethylene Production ◽  
Oxidase Activity ◽  
Acid Metabolism ◽  
Cold Treatment ◽  
Acc Oxidase ◽  
Malus Domestica Borkh ◽  
Harvest Dates ◽  
Harmonization Process ◽  
Harvest Maturity

Changes in 1-aminocyclopropane-1-carboxylic acid metabolism in apples ( Malus domestica Borkh cv Granny Smith) were studied in relation to cold storage. Emphasis was given to the differential re sponsiveness of fruits to cold treatment as a function of stage of maturity at harvest. Fruits were held at 1 or 20 °C for 30 days, respectively, or exposed to 1 °C for 10 days and then storaged at 20 °C for up to 30 days. Fruits at 20 °C showed typical climacteric behavior. Differences at 1 °C between maturity stages in ethylene production and ACC oxidase activity were abolished, which showed that cold treatment is an important inducer of climacteric rise in preclimacteric Granny Smith apples. At 1 °C, ethylene production was lower than at 20 °C and the maxima in production were similar for all the stages of maturity, but took place at different times which corresponded exactly to the initial differ ences in harvest dates. After the transfer to 20 °C, fruits exhibited similar behavior as regards ethyl ene production, ACC oxidase activity, and ACC and MACC levels in relation to a harmonization process which is discussed in this study.

Ethylene production and post-pollination development in Dendrobium flowers treated with foreign pollen

2001 ◽  
Vol 28 (5) ◽  
pp. 409 ◽  
Author(s):  
Saichol Ketsa ◽  
Kanokporn Bunya-atichart ◽  
Wouter G. van Doorn
Keyword(s):  
Carboxylic Acid ◽  
Ethylene Production ◽  
Acc Synthase ◽  
Aminooxyacetic Acid ◽  
Foreign Pollen ◽  
Incompatible Pollen ◽  
Ovary Growth

Dendrobium ‘Pompadour’ flowers fade early following pollination. This is associated with increased ethylene production and early epinasty. These effects are also produced by application of 1-aminocyclopropane-1-carboxylic acid (ACC) on the stigma. Pollen (one anther each) from Ruellia tuberosa L. (Acanthaceae) and Caesalpinia pulcherrima (L.) Sw. (Fabaceae) also increased ethylene production and caused early epinasty and fading. Pollen of Hibiscus schizopetalus (Mast.) Hook.f. (Malvaceae), in contrast, had no effect. R. tuberosa pollen increased ACC concentration and ACC synthase activity of the orchid flowers. Aminooxyacetic acid (AOA) pretreatment prior to R. tuberosa pollination prevented early fading, epinasty and the increase in ethylene production. It also prevented the increase in ACC concentration, and ACC synthase activity. Ovary growth was stimulated by Dendrobium ‘Pompadour’ pollinia, not by any of the incompatible pollen. Applied ACC did not promote ovary growth. It is concluded that incompatible pollen can hasten senescence and epinasty by increasing ACC synthase activity and ethylene production. Ovary growth, in contrast, is apparently not primarily regulated by ethylene.

scholarly journals Estimation of ethylene production and 1-aminocyclopropane-1-carboxylic acid in plants by means of gas chromatography

2008 ◽  
Vol 54 (No. 2) ◽  
pp. 55-60 ◽  
Author(s):  
H. Fišerová ◽  
Z. Mikušová ◽  
M. Klemš
Keyword(s):  
Gas Chromatography ◽  
Carboxylic Acid ◽  
Ethylene Production ◽  
Sampling Procedure ◽  
Alternative Methods ◽  
Time Consumption ◽  
Advantages And Disadvantages ◽  
Endogenous Level ◽  
Extraction And Purification ◽  
And Storage

The paper deals with problems associated with preparation and collection of samples when estimating the production of ethylene and content of ACC (1-aminocyclopropane-1-carboxylic acid) in plants by means of gas chromatography. A proper method of sampling can significantly influence not only the reliability of obtained data but also their interpretation. Attention was paid to cultivation of plant material, sampling vessels, conditions of ethylene production, sampling procedure, and storage of gaseous samples. The estimation of ACC as a precursor of ethylene is more laborious but it supplements the information about the endogenous level of ethylene in a given part of the plant organism. The authors describe the sampling procedure, methods of sample preservation, extraction and purification, and also the method of oxidation of ACC to ethylene. In the final part of this study the authors evaluate the time consumption and difficulty of individual methods and describe their advantages and disadvantages as compared with other, alternative methods.

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