Topic
Matthiola
About: Matthiola is a research topic. Over the lifetime, 66 publications have been published within this topic receiving 883 citations. The topic is also known as: stock flower.
Papers published on a yearly basis
Papers
TL;DR: The lack of anthocyanin-deficient Arabidopsis mutants mapping to the locations of GL3 and MYC-146 suggests that the two bHLH proteins may be partially redundant and overlap in function.
Abstract: Basic helix-loop-helix (bHLH) proteins, similar to mammalian Myc transcription factors, regulate the anthocyanin biosynthetic pathway in both monocots and dicots. Two Arabidopsis bHLH genes, GLABRA3 (GL3) and MYC-146, encode proteins that are similar throughout the predicted amino acid sequence to R and DELILA, which regulate anthocyanin production in maize and snapdragon, respectively. Northern blot analysis indicates that MYC-146 is most highly expressed in flower buds and flowers. Expression of a MYC-146 cDNA from the CaMV 35S promoter was unable to complement the anthocyanin deficiency in a ttg1 mutant of Arabidopsis and resulted in no obvious phenotypic change in Columbia plants. However, transient expression of GL3 and MYC-146 upon microprojectile bombardment of petals of a white-flowered mutant of Matthiola incana was able to complement anthocyanin deficiency. The lack of anthocyanin-deficient Arabidopsis mutants mapping to the locations of GL3 and MYC-146 suggests that the two bHLH proteins may be partially redundant and overlap in function.
118 citations
TL;DR: Correlation between the genotype of M. incana and the presence of dihydroflavonol 4-reductase is strong evidence that this enzyme is involved in anthocyanin biosynthesis.
Abstract: A cell-free extract from flowers of Matthiola incana catalyzes a NADPH-dependent stereospecific reduction of (+)-dihydrokaempferol to 3,4-cis-leucopelargonidin (5,7,4'-trihydroxyflavan-3,4-cis-diol). The pH-optimum of this reaction is around 6. The rate of reaction with NADH was about 50% of that found with NADPH. (+)-Dihydroquercetin and (+)-dihydromyricetin were also reduced by the enzyme preparation to the corresponding flavan-3,4-cis-diols. Correlation between the genotype of M. incana and the presence of dihydroflavonol 4-reductase is strong evidence that this enzyme is involved in anthocyanin biosynthesis.
87 citations
TL;DR: Striking is the strict occurrence of a 'TATA' box starting at nucleotide-28 similar to Neurospora crassa 5S rRNA genes, suggesting a function in termination.
83 citations
TL;DR: In spite of their genus-specific distribution pattern, the capacity of plants to accumulate and store phenolic choline esters in seeds is highly variable within the genus Brassica, and the aromatic choline Esters content is also influenced by environmental conditions.
80 citations
TL;DR: A variety of stock (Matthiola ilzcana R. Br.) known as Snowflake has been shown by FROST (1919) to produce frequent mutants of at least eight distinct kinds, determined to be trisomic.
Abstract: A variety of stock (Matthiola ilzcana R. Br.) known as Snowflake has been shown by FROST (1919) to produce frequent mutants of at least eight distinct kinds. These mutant forms are genetically inconstant, part of the progeny always being normals. These forms have been determined (FROST and MANN 1924, and papers in preparation) to be trisomic. Within, the variety Snowflake, all plants cytologically examined, whether normal or with one or more extra chromosomes, have had strikingly long first-metaphase chromosomes in their pollen mother cells. Miss ALLEN (1924) figured chromosomes for several pure single varieties of Matthiola, showing them to be much shorter than those found in Snowflake. The four pure single races used in the hybridization studies described below likewise all had very short chromosomes at and immediately before the first metaphase. The contrast in chromosome shape between Snowflake and these pure single varieties was very striking. These short-chromosome varieties were crossed with Snowflake trisomics. The F1 hybrids had short chromosomes, about like those of the pure single parents. It had seemed possible that the first-metaphase bivalents of these hybrids might each consist of a short and a long element, representing the respective parental types, but no suggestion of such a situation was observed. The short form was dominant in the group as a whole; each bivalent was composed of two similar members, whose source could not be determined. When Fz hybrids were examined, it was at once evident that genetic segregation for chromosome shape had oc-
74 citations
Related Topics (5)
Performance Metrics
| Year | Papers |
|---|---|
| 2021 | 2 |
| 2020 | 2 |
| 2019 | 3 |
| 2018 | 2 |
| 2016 | 5 |
| 2014 | 3 |