1. A method for supplying power to a device comprising photosensitive means arranged for changing a received luminous energy into electric power, the device being associated with power storage means for storing electric power obtained by the photosensitive means, the method comprising the following steps
detecting a remaining load in the power storage means; and
when said remaining load is below a first threshold, commanding a light source to be switched on.
2. A method as claimed in claim 1, comprising a further step of commanding the light source to be switched off when the remaining load in the power storage means is above a second threshold, the second threshold value being more than the first threshold value.
3. A method as claimed in claim 1, wherein the light source is controlled by a switch, wherein the device and the switch have communication means, and wherein commanding the light source to be switched on comprises sending a signal from the device via said communication means.
4. A method as claimed in claim 3, wherein said signal is sent directly to the switch.
5. A method as claimed in claim 3, wherein said signal is sent to a coordination device and wherein commanding the light source to be switched on further comprises sending a signal from the coordination device to the switch via said communication means.
6. A method as claimed in claim 3, wherein the communication means are wireless.
7. A method as claimed in claim 1, wherein said device includes a sensor.
8. A method as claimed in claim 1, wherein the power storage means are designed to store a predetermined amount of electric power set for supplying the device substantially for a whole night after the photosensitive means of the device have been exposed to the daylight substantially for a whole day.
9. A device comprising photosensitive means arranged for changing a received luminous energy into electric power, the device being associated with power storage means for storing electric power obtained by the photosensitive means, said device further comprising:
means for detecting a remaining load in the power storage means; and
means for commanding a light source to be switched on when said remaining load is below a first threshold.
10. A device as claimed in claim 9, further comprising means for commanding the light source to be switched off when the remaining load is above a second threshold, the second threshold value being more than the first threshold value.
11. A device as claimed in claim 9, wherein the light source is controlled by a switch, wherein the device has communication means and wherein the means for commanding the light source to be switched on comprise means for sending a signal via said communication means.
12. A device as claimed in claim 11, wherein the means for sending a signal are arranged for sending the signal directly to the switch.
13. A device as claimed in claim 11, wherein the means for sending a signal are arranged for sending the signal to a coordination device.
14. A device as claimed in claim 9, wherein the communication means are wireless.
15. A device as claimed in claim 9, including a sensor.
16. A device as claimed in claim 9, wherein the power storage means are designed to store a predetermined amount of electric power set for supplying the device substantially for a whole night after the photosensitive means of the device have been exposed to the daylight substantially for a whole day.
The claims below are in addition to those above.
All refrences to claim(s) which appear below refer to the numbering after this setence.
1-23. (canceled)
24. A nutritionally enhanced corn feed product comprising corn plants or plant parts thereof comprising an expression vector comprising a polynucleotide molecule encoding a chloroplast transit peptide fused to a monomeric anthranilate synthase, wherein:
a) the chloroplast transit peptide comprises the polypeptide sequence of SEQ ID NO:21, 22, 28, 32, 33, or 36; or
b) the polynucleotide molecule encoding the chloroplast transit peptide comprises SEQ ID NO: 2, 3, 9, 13, 14 or 17;
wherein said corn feed product has enhanced levels of at least tryptophan when compared to a corn feed product from a plant of the same genotype but lacking said polynucleotide molecule.
25. The feed product of claim 24, wherein said plant parts comprise corn seeds.
26. The feed product of claim 24, wherein said monomeric anthranilate synthase is feedback insensitive to tryptophan.
27. The feed product of claim 24, wherein said polynucleotide encoding a chloroplast transit peptide comprises SEQ ID NO: 9, and said polynucleotide encoding a monomeric anthranilate synthase comprises SEQ ID NO: 207.
28. The feed product of claim 24, wherein said chloroplast transit peptide is capable of compartmentalizing said monomeric anthranilate synthase to a plastid in said plant cell.
29. The feed product of claim 24, defined as comprising a nucleic acid which produces an amplicon diagnostic for an expression vector comprising a polynucleotide molecule encoding a chloroplast transit peptide fused to a monomeric anthranilate synthase, wherein:
a) the chloroplast transit peptide comprises the polypeptide sequence of SEQ ID NO:21, 22, 28, 32, 33, or 36; or
b) the polynucleotide molecule encoding the chloroplast transit peptide comprises SEQ ID NO: 2, 3, 9, 13, 14 or 17,
when tested in a DNA amplification method.
30. A nutritionally enhanced corn feed product of claim 24, prepared from corn plants or plant parts thereof comprising tryptophan levels that are greater than about 200 to 400 ppm, 400 to 600 ppm, or 600 to 800 ppm.
31. The feed product of claim 30, wherein said plant parts comprise corn seeds.
32. The feed product of claim 24, wherein the expression vector comprises a promoter functional in plants operably linked to said polynucleotide encoding the chloroplast transit peptide fused to the monomeric anthranilate synthase.
33. The feed product of claim 32, wherein said promoter is a constitutive, inducible, seed-specific, or tissue-preferred promoter.