Evolution and Diversification of FRUITFULL Genes in Solanaceae

Ecologically and economically important fleshy edible fruits have evolved from dry fruit numerous times during angiosperm diversification. However, the molecular mechanisms that underlie these shifts are unknown. In the Solanaceae there has been a major shift to fleshy fruits in the subfamily Solanoideae. Evidence suggests that an ortholog of FRUITFULL (FUL), a transcription factor that regulates cell proliferation and limits the dehiscence zone in the silique of Arabidopsis, plays a similar role in dry-fruited Solanaceae. However, studies have shown that FUL orthologs have taken on new functions in fleshy fruit development, including regulating elements of tomato ripening such as pigment accumulation. FUL belongs to the core eudicot euFUL clade of the angiosperm AP1/FUL gene lineage. The euFUL genes fall into two paralogous clades, euFULI and euFULII. While most core eudicots have one gene in each clade, Solanaceae have two: FUL1 and FUL2 in the former, and MBP10 and MBP20 in the latter. We characterized the evolution of the euFUL genes to identify changes that might be correlated with the origin of fleshy fruit in Solanaceae. Our analyses revealed that the Solanaceae FUL1 and FUL2 clades probably originated through an early whole genome multiplication event. By contrast, the data suggest that the MBP10 and MBP20 clades are the result of a later tandem duplication event. MBP10 is expressed at weak to moderate levels, and its atypical short first intron lacks putative transcription factor binding sites, indicating possible pseudogenization. Consistent with this, our analyses show that MBP10 is evolving at a faster rate compared to MBP20. Our analyses found that Solanaceae euFUL gene duplications, evolutionary rates, and changes in protein residues and expression patterns are not correlated with the shift in fruit type. This suggests deeper analyses are needed to identify the mechanism underlying the change in FUL ortholog function.

Care for the underinsured: who should pay?

Inner-city medically underinsured adults describe their preferences for health care and willingness to pay for health care services. The responses of 146 patients attest to the burden of administrative and economic responsibility placed on the public health care sector for indigent patient care. The results of this survey address the information required by the nurse managers who must balance patient needs against administrative pressures to generate revenue from patient fees.

Teaching inner-city mothers about family planning and prenatal and pediatric services

One hundred thirty-five young, black, inner-city, pregnant women assessed the usefulness of a videotape designed by community health nurses to increase the self-care practices of low-income minority women with regard to their prenatal, pediatric, and family planning health needs. Seventy percent of the women rated as very useful information on the availability of health care and the protocols of public health clinics. The women also stated that they would tell others about public health care services and intended to make use of these services themselves as a result of viewing the videotape. The viewers' responses help clarify the preferred modality, content, and length of patient education for medically and socioeconomically high-risk pregnant women who tend to underuse preventive and primary health care.

Glutamic acid mimicking of synaptic inhibition on the giant serotonin neurone of the snail

Stimulation of the snail's tentacle nerves results in hyperpolarization and inhibition of the 'giant serotonin-containing neurone'located in the brain. Glutamic acid mimics this effect. Available data indicate that the reversal potential for the glutamic acid effect is very similar to that of the synaptic action being about 5 to 8 mV more negative than the resting potential in each case.