scholarly journals RNAi of AGAMOUS genes in sweetgum alters reproductive organ identity and decreases fruit persistence

Plant Direct ◽  
2020 ◽  
Vol 4 (5) ◽  
Author(s):  
Amy L. Klocko ◽  
Amy M. Brunner ◽  
Cathleen Ma ◽  
Elizabeth Etherington ◽  
Kori Rosenstiel ◽  
...  
Keyword(s):  
Reproductive Organ ◽  
Organ Identity

HUA ENHANCER2, a putative DExH-box RNA helicase, maintains homeotic B and C gene expression inArabidopsis

Development ◽  
2002 ◽  
Vol 129 (7) ◽  
pp. 1569-1581 ◽  
Author(s):  
Tamara L. Western ◽  
Yulan Cheng ◽  
Jun Liu ◽  
Xuemei Chen
Keyword(s):  
Gene Expression ◽  
Floral Organ ◽  
Rna Helicase ◽  
Reproductive Organ ◽  
Recessive Mutation ◽  
Homeotic Genes ◽  
Organ Identity ◽  
Quadruple Mutant ◽  
Normal Spacing ◽  
Floral Homeotic

Reproductive organ identity in Arabidopsis is controlled by the B, C and SEPALLATA classes of floral homeotic genes. We have identified a recessive mutation in a novel gene, HUA ENHANCER2, which, when combined with mutations in two weak class C genes, HUA1 and HUA2, leads to the production of third whorl sepal-petal-stamens and fourth whorl sepal-carpels. Quadruple mutant analysis and in situ localization of A, B, C and SEPALLATA floral homeotic RNAs suggest that HUA ENHANCER2 is required for the maintenance of B and C gene expression in the reproductive whorls. In addition to its role in floral homeotic gene expression, HUA ENHANCER2 is required for normal spacing and number of perianth organ primordia. We show that HUA ENHANCER2 encodes a putative DExH-box RNA helicase that is expressed in specific patterns in the inflorescence meristem and developing flowers. As a possible ortholog of the yeast exosome-associated protein, Dob1p (Mtr4p), HUA ENHANCER2 may affect floral organ spacing and identity through the regulation of protein synthesis or mRNA degradation. Therefore, our studies on HUA ENHANCER2 not only demonstrate that B and C gene expression is established and maintained separately, but also implicate the existence of post-transcriptional mechanisms in the maintenance of B and C gene expression.

scholarly journals Functional Analysis of All AGAMOUS Subfamily Members in Rice Reveals Their Roles in Reproductive Organ Identity Determination and Meristem Determinacy

2011 ◽  
Vol 23 (8) ◽  
pp. 2850-2863 ◽  
Author(s):  
Ludovico Dreni ◽  
Alessandro Pilatone ◽  
Dapeng Yun ◽  
Stefano Erreni ◽  
Alice Pajoro ◽  
...  
Keyword(s):  
Functional Analysis ◽  
Reproductive Organ ◽  
Organ Identity

HEN1functions pleiotropically inArabidopsisdevelopment and acts in C function in the flower

Development ◽  
2002 ◽  
Vol 129 (5) ◽  
pp. 1085-1094 ◽  
Author(s):  
Xuemei Chen ◽  
Jun Liu ◽  
Yulan Cheng ◽  
Dongxuan Jia
Keyword(s):  
Plant Development ◽  
Leaf Shape ◽  
Reproductive Organ ◽  
Genetic Screen ◽  
Multiple Roles ◽  
Organ Identity ◽  
New Gene ◽  
Rosette Leaf ◽  
Novel Protein ◽  
Floral Homeotic

Four classes of floral homeotic MADS domain proteins specify the identities of the four organ types in an Arabidopsis flower. While the activities of the MADS domain proteins are essentially confined to the flower or to the inflorescence, several genes, such as APETALA2, HUA1 and HUA2, also act outside the flower in addition to their organ identity functions inside the flower. We identified a new gene, HUA ENHANCER 1 (HEN1) from a sensitized genetic screen in the hua1-1 hua2-1 background that is compromised in floral homeotic C function. We showed that HEN1, like the C function gene AGAMOUS, acts to specify reproductive organ identities and to repress A function. HEN1 also shares AG’s non-homeotic function in controlling floral determinacy. HEN1 may achieve these functions by regulating the expression of AG. hen1 single mutants exhibit pleiotropic phenotypes such as reduced organ size, altered rosette leaf shape and increased number of coflorescences, during most stages of development. Therefore, HEN1, like the A function gene AP2, plays multiple roles in plant development as well as acting in organ identity specification in the flower. HEN1 codes for a novel protein and is expressed throughout the plant.

Reproductive Organ Education for Psychic Health Development of Early Age

2018 ◽  
Vol 2 ◽  
Author(s):  
Dwi Darwati
Keyword(s):  
Early Childhood ◽  
Early Childhood Development ◽  
Deviant Behavior ◽  
Reproductive Organs ◽  
Reproductive Organ ◽  
The Body ◽  
Childhood Development ◽  
Early Age ◽  
Digital Era ◽  
Stage Of Development

Reproductive  health education should be given since early childhood by using language that is adapted to the stage of development. If you procrastinate and wait until the teenager it is already too late because in the days of the digital era, as now, all the information can be easily accessed by anyone including children early age. If the early childhood misinformed about their reproductive organs it would disrupt the physical and psychological development due to the wrong behavior in caring for and maintaining reproductive organs. Qur’an as the holy book of Muslims describes the steps of reproduction and  imparting education wisely as well as how to apply such education. This kind of education must be in accordance with the conditions of children and there should not be a lie about it We can also use media and methods such as pictures, songs, tap or other visual  media which can give clearer information, so that children can clearly see parts of the body, their characteristics, and how to treat and care them. The impropriate approach in conveying this kind of knowledge will be very dangerous for children. The provision of early age reproductive organs education can prevent the occurrence of deviant behavior as well as protect children from dangerous influence in early childhood development.

Pengetahuan dan Sikap Calon Guru Biologi pada Kesehatan Reproduksi

2013 ◽  
Vol 1 (1) ◽  
Author(s):  
Herlin Andayani ◽  
Lukman Aprizal ◽  
Bambang Hariyadi
Keyword(s):  
Reproductive Health ◽  
Reproductive Biology ◽  
Teacher Candidates ◽  
Uterine Cancer ◽  
Biology Education ◽  
Social Institutions ◽  
Reproductive Organ ◽  
Biology Teacher ◽  
Sexually Transmitted ◽  
Academic Year

Reproductive health is a major problem that occurs in Indonesian adolescents. The problem is caused by some factors, including free sex that could induce reproductive organ diseases such as cervical cancer, ovarian cancer, vulvar cancer, uterine cancer, prostate cancer and sexually transmitted diseases. Incidence of various reproductive health problems is caused by a lack of knowledge about reproductive health. This issue needs to get attention from various parties, including teachers. However, some teachers are less understood about how to deliver reproductive health materials properly. This study aims to determine knowledge and attitudes of teacher candidates about reproductive biology. This study is a descriptive analytic study. The subjects were students of biology education at Jambi University who are in 5th and 7th semesters of academic year 2011/2012 (174 students).  The data was collected using tests and questionnaires. The results show that knowledge of the biology teacher candidates about the reproductive health is categorized as low (43​​%).  The attitude of biology teacher candidates about reproductive biology is classified as positive (64%). The formation of attitudes toward reproductive health is influenced by several factors including knowledge, experience, guidance from parents, social environment, mass media, cultural, and social institutions.

Sign in / Sign up

Export Citation Format

Share Document