scholarly journals A review on ethylene sensitivity in cut orchid flowers and its control using 1-MCP

2020 ◽  
pp. 1
Author(s):  
Parviz Almasi
Keyword(s):  
Ethylene Sensitivity

scholarly journals Petal abscission in fragrant roses is associated with large scale differential regulation of the abscission zone transcriptome

2020 ◽  
Vol 10 (1) ◽  
Author(s):  
Priya Singh ◽  
Neeraj Bharti ◽  
Amar Pal Singh ◽  
Siddharth Kaushal Tripathi ◽  
Saurabh Prakash Pandey ◽  
...  
Keyword(s):  
Transcription Factors ◽  
Large Scale ◽  
Scale Up ◽  
Differential Regulation ◽  
Regulatory Proteins ◽  
Comparative Transcriptome ◽  
Ethylene Sensitivity ◽  
Core Set ◽  
Genes Encoding ◽  
Rosa Bourboniana

Abstract Flowers of fragrant roses such as Rosa bourboniana are ethylene-sensitive and undergo rapid petal abscission while hybrid roses show reduced ethylene sensitivity and delayed abscission. To understand the molecular mechanism underlying these differences, a comparative transcriptome of petal abscission zones (AZ) of 0 h and 8 h ethylene-treated flowers from R. bourboniana was performed. Differential regulation of 3700 genes (1518 up, 2182 down) representing 8.5% of the AZ transcriptome was observed between 0 and 8 h ethylene-treated R. bourboniana petal AZ. Abscission was associated with large scale up-regulation of the ethylene pathway but prominent suppression of the JA, auxin and light-regulated pathways. Regulatory genes encoding kinases/phosphatases/F-box proteins and transcription factors formed the major group undergoing differential regulation besides genes for transporters, wall modification, defense and phenylpropanoid pathways. Further comparisons with ethylene-treated petals of R. bourboniana and 8 h ethylene-treated AZ (R. hybrida) identified a core set of 255 genes uniquely regulated by ethylene in R. bourboniana AZ. Almost 23% of these encoded regulatory proteins largely conserved with Arabidopsis AZ components. Most of these were up-regulated while an entire set of photosystem genes was prominently down-regulated. The studies provide important information on regulation of petal abscission in roses.

Co-suppression of the EIN2-homology gene LeEIN2 inhibits fruit ripening and reduces ethylene sensitivity in tomato

2010 ◽  
Vol 57 (4) ◽  
pp. 554-559 ◽  
Author(s):  
Z. L. Hu ◽  
L. Deng ◽  
X. Q. Chen ◽  
P. Q. Wang ◽  
G. P. Chen
Keyword(s):  
Fruit Ripening ◽  
Ethylene Sensitivity

Role of short-chain saturated fatty acids in the control of ethylene sensitivity in senescing carnation flowers

1993 ◽  
Vol 88 (2) ◽  
pp. 243-250 ◽  
Author(s):  
C. S. Whitehead ◽  
D. Vasiljevic
Keyword(s):  
Fatty Acids ◽  
Saturated Fatty Acids ◽  
Short Chain ◽  
Ethylene Sensitivity

Transformation ofCampanula carpaticato alter flower colour and ethylene sensitivity

2015 ◽  
Vol 90 (5) ◽  
pp. 518-524 ◽  
Author(s):  
Z. Ghayoor Karimiani ◽  
M. Serek ◽  
H. Mibus
Keyword(s):  
Flower Colour ◽  
Ethylene Sensitivity

Modification of ethylene sensitivity in ornamental plants using CRISPR/Cas9

2017 ◽  
pp. 271-280 ◽  
Author(s):  
O. Kemp ◽  
B.T. Favero ◽  
J.N. Hegelund ◽  
S.R. Møller ◽  
R. Müller ◽  
...  
Keyword(s):  
Ornamental Plants ◽  
Ethylene Sensitivity

Recovery of ethylene sensitivity and responses in carnation petals post-treatment with 1-methylcyclopropene

2016 ◽  
Vol 121 ◽  
pp. 78-86 ◽  
Author(s):  
Byung-Chun In ◽  
Brad M. Binder ◽  
Tanya G. Falbel ◽  
Sara E. Patterson
Keyword(s):  
Post Treatment ◽  
Ethylene Sensitivity ◽  
Carnation Petals

Relationships between the longevity, water relations, ethylene sensitivity, and gene expression of cut roses

2017 ◽  
Vol 131 ◽  
pp. 74-83 ◽  
Author(s):  
Byung-Chun In ◽  
Suong T.T. Ha ◽  
Young Soon Lee ◽  
Jin Hee Lim
Keyword(s):  
Gene Expression ◽  
Water Relations ◽  
Ethylene Sensitivity

scholarly journals Expression of Ethylene Biosynthesis and Signaling Genes during Differential Abscission Responses of Sweet Orange Leaves and Mature Fruit

2010 ◽  
Vol 135 (5) ◽  
pp. 456-464 ◽  
Author(s):  
Karthik-Joseph John-Karuppiah ◽  
Jacqueline K. Burns
Keyword(s):  
Gene Expression ◽  
Sweet Orange ◽  
Ethylene Biosynthesis ◽  
Differential Response ◽  
Leaf Abscission ◽  
Mature Fruit ◽  
Fruit Abscission ◽  
Ethylene Sensitivity ◽  
Ethylene Response ◽  
Significant Difference

When applying abscission agents to tree fruit to facilitate harvest, it is desirable to loosen fruit and not leaves or other organs, but mechanisms controlling leaf and fruit drop are not fully understood. The effect of 450 μL·L−1 ethephon (ethylene-releasing agent) alone or in combination with 1-methylcyclopropene [1-MCP (ethylene perception inhibitor)] on leaf and mature fruit abscission of ‘Valencia’ sweet orange (Citrus sinensis) was studied. Leaf abscission increased and fruit detachment force (FDF) decreased significantly especially 4 days after ethephon treatment. Leaf drop rose to over 80% 7 days after application, whereas FDF was only 30% less than untreated control fruit. When 1-MCP was combined with ethephon and applied to ‘Valencia’ sweet orange canopies, leaf abscission was greatly reduced, but reduction in FDF proceeded unabated. We hypothesized that differential response of ‘Valencia’ sweet orange fruit and leaves to 1-MCP was correlated with expression of ethylene biosynthetic and signaling genes and their downstream action. Partial or full-length nucleotide sequences were obtained for ‘Valencia’ sweet orange homologs of 1-amino-cyclopropane-1-carboxylate synthase-1 (CsACS1), 2 (CsACS2), 1-amino-cyclopropane-1-carboxylate oxidase (CsACO), ethylene response sensor-1 (CsERS1), ethylene response-1 (CsETR1), 2 (CsETR2), 3 (CsETR3), constitutive triple response-1 (CsCTR1), ethylene insensitive-2 (CsEIN2), and ethylene insensitive 3-like-1 (CsEIL1) and 2 (CsEIL2). Ethephon application increased expression of biosynthesis genes CsACS1 and CsACO and receptors CsERS1 and CsETR2 in the abscission zones of leaves and mature fruit. Ethephon-induced increase in gene expression was completely suppressed by 1-MCP application in all but CsACS1 and CsACO in fruit abscission zones. Although gene expression was suppressed initially, CsACS1 and CsACO expression in fruit abscission zones treated with 1-MCP in the presence or absence of ethephon increased over the 7-day measurement period, suggesting that CsACS1 and CsACO expression were negatively regulated by basal ethylene production in this tissue. However, 1-MCP treatment alone did not loosen fruit, indicating that CsACS1 and CsACO played minor roles in fruit abscission. To determine if the difference in ethylene sensitivity was the basis of differential response to ethylene within the same organ, potted ‘Valencia’ sweet orange plants were treated with ethylene, and rates of blade and petiole drop and detachment forces at the laminar and petiolar abscission zones were studied. Although leaf blades abscised earlier than petioles, the force of detachment was similar, indicating no differences in ethylene sensitivity. Overall, the most significant difference between fruit and leaf abscission zones was seen in the expression of CsACS1 and CsACO genes, but the expression pattern was poorly correlated with abscission.

scholarly journals Evaluating Ethylene Sensitivity within the Family Solanaceae at Different Developmental Stages

HortScience ◽  
2014 ◽  
Vol 49 (5) ◽  
pp. 628-636 ◽  
Author(s):  
Nichole F. Edelman ◽  
Michelle L. Jones
Keyword(s):  
High Response ◽  
Seedling Stage ◽  
Mature Plant ◽  
Flower Senescence ◽  
Plant Responses ◽  
Hypocotyl Length ◽  
Ethylene Sensitivity ◽  
The Family ◽  
Plant Stage ◽  
Flower Abscission

The family Solanaceae, which includes both important crop and ornamental species, is generally considered to have high sensitivity to ethylene. Our objectives were to evaluate ethylene sensitivity between accessions with the family Solanaceae and to determine whether similar sensitivity was observed in seedlings and mature plants. For the seedling evaluations, seeds were germinated and grown in the dark on filter paper saturated with 0 or 100 μM 1-aminocyclopropane-1-carboxylic acid (ACC; the immediate precursor to ethylene). The relative hypocotyl length at 100 μM ACC was compared with untreated control (0 μM) seedlings. Mature plants were treated with 0 or 10 μL·L−1 ethylene in the dark for 24 hours. Ethylene responses including flower abscission, flower senescence, and epinasty were observed and quantified. Seedlings and mature plants were classified as having no response, low, medium, or high ethylene sensitivity based on the severity of the ethylene responses observed. Sensitivity differences were observed among seedling, juvenile, and mature plants, and a range of ethylene responses and symptom severity was observed between accessions within a species. The majority of the accessions were classified as medium or high ethylene sensitivity at both the seedling and mature plant stages. Solanum melongena ‘Black Beauty’ (eggplant) had a low response to ethylene at the seedling stage and a high response at the mature plant stage, whereas Petunia ×hybrida ‘Daddy Orchid’ had a high response at the seedling stage and a low response at the mature plant stage. Peppers (Capsicum annum), tomatoes (Solanum lycopersicum), and tomatillos (Physalis ixocarpa) exhibited both floral and vegetative symptoms of ethylene damage, whereas calibrachoas (Calibrachoa ×hybrida), eggplants, nicotianas, and petunias exhibited only floral symptoms. The most common floral response to ethylene treatment was flower abscission, which was observed in almost all of the Solanum, Capsicum, and Nicotiana accessions. We consistently observed ethylene-induced epinasty in the genus Capsicum and in all of the Solanum except eggplant. Our results indicated that developmental stage influenced ethylene sensitivity, and there was not a consistent correlation between seedling and mature plant responses within the Solanaceae accessions that we evaluated.

Sign in / Sign up

Export Citation Format

Share Document