9 publications mentioning mtr-MIR399c

Open access articles that are associated with the species Medicago truncatula and mention the gene name MIR399c. Click the [+] symbols to view sentences that include the gene name, or the word cloud on the right for a summary.

1

For example, miR399 and miR2111 have been reported to be up-regulated by phosphate starvation [23, 65], while miR169 with target of CCAAT Binding Factor is down-regulated in response to drought stress [14, 17].

In this context, miR399 negatively regulates the concentration of inorganic phosphate (Pi) by targeting PHO2, a type of E2 conjugase, and overexpression of miR399 in Pi-replete conditions represses expression of E2 conjugase, leading to an increase in Pi concentration in leaves in Arabidopsis [23].

from both the methods showed that 22 members in 4 miRNA families, i. e., miR399, miR2089, miR2111 and miR2118, were up-regulated in response to the drought stress.

Expression of miR399 is reduced under Pi-deprived conditions to facilitate accumulation of Pi in plants.

In our study, the expression miR399 and miR2111 was similar under drought stress.

These results indicate that the function of miR2111 may be as important as miR399 in regulation of nutrient acquisition.

Among the identified miRNAs, miR399 contained the most members, including miR399a-i and miR399k-q (Figure 1b).

2

Branscheid A Sieh D Pant BD May P Devers EA Elkrog A Schauser L Scheible W-R Krajinski F Expression pattern suggests a role of MiR399 in the regulation of the cellular response to local Pi increase during arbuscular mycorrhizal symbiosis.

Other miRNAs, such as miR395 and miR399, are involved in adaptive responses to local variations in nutrient availability (sulfate and phosphate, respectively) in the soil [10].

In legumes, a role of miR399 in responses to increased phosphate, a nutritional status linked to effective mycorrhization, was reported by Branscheid et al. [12].

In contrast, our procedure clearly led to an underestimation of certain families, in particular miR169, miR395 and miR399.

3

Expression pattern suggests a role of MiR399 in the regulation of the cellular response to local Pi increase during arbuscular mycorrhizal symbiosis.

Branscheid et al. (2010) first reported the accumulation of miR399 in the roots of M. trunctula and tobacco (Nicotiana tabacum) during AM symbiosis (Branscheid et al., 2010).

Five miRNA families (miR399, miR156, miR166, miR171, and miR172) had more than 10 members, and miR156 family, the largest family, had 23 members.

4

However, searches of miR395 and miR399-like sequences in the G. max genomic database, allowing three mismatches, allowed us to identify 30 and 20 putative members respectively (C. Lelandais, pers.

Surprisingly, for some families, an opposite profile was observed: for instance, miR395 and miR399 genes, generally organized in clusters, were more abundant in M. truncatula than in soybean (18/13 genes for miR395 and 18/8 genes for miR399 according to miRBase).

Most of them (from miR156 to miR399) corresponded to the set of 21 conserved miRNAs found in nearly all angiosperms (Sunkar and Jagadeeswaran, 2008).

5

Two of the 818 miRNAs identified in this analysis (miR166 and miR399) have been previously shown to directly regulate cold and salt responses [72].

6

Expression pattern suggests a role of MiR399 in the regulation of the cellular response to local Pi increase during arbuscular mycorrhizal symbiosis.

7

AtIPS1 and At4 have been shown to act as target mimics of miR399 by binding and sequestering miR399 and reduce miR399 -mediated cleavage of PHO2 which is important for phosphate uptake [22, 23].

8

First evidence that miRNAs are also involved in AMS came from the observation that multiple miRNAs, e. g. miR399, are differentially regulated in the shoots and roots of mycorrhizal M. truncatula, tobacco and tomato plants [[28],[29]].

9

Regulatory network of microRNA399 and PHO2 by systemic signaling.