Methods for increasing one or more glucosinolates in a plant
First Claim
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1. A method for growing a plant comprising:
- providing a plant that is a member of the order Capparales;
exposing the plant for at least about 3 days to a light photoperiod and a dark photoperiod and an altered radiation condition, wherein the light photoperiod comprises white light comprising photosynthetically active radiation from about 350 μ
mol/second/meter to about 500 μ
mol/second/meter, wherein the altered radiation condition comprises extending the length of the light photoperiod, varying the spectral quality of the light, exposing the plant to radiation during the dark photoperiod, or a combination thereof, and wherein the plant exposed to the altered radiation condition has a concentration of a glucosinolate that is greater than a concentration of glucosinolate in a control plant that is exposed to white light for a light photoperiod of about 8 consecutive hours for each 24 hours.
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Abstract
The present invention provides methods for growing plants to result in increased concentrations of one or more glucosinolates. The plant may be a member of the order Capparales, such as a Brassicaceae, a Capparaceae, or a cultivar thereof. The methods include exposing a plant to an altered radiation condition, a water deficit condition, an altered growth temperature, an altered level of sulfur and/or nitrogen, or a combination thereof.
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Citations
26 Claims
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1. A method for growing a plant comprising:
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providing a plant that is a member of the order Capparales;
exposing the plant for at least about 3 days to a light photoperiod and a dark photoperiod and an altered radiation condition, wherein the light photoperiod comprises white light comprising photosynthetically active radiation from about 350 μ
mol/second/meter to about 500 μ
mol/second/meter, wherein the altered radiation condition comprises extending the length of the light photoperiod, varying the spectral quality of the light, exposing the plant to radiation during the dark photoperiod, or a combination thereof, and wherein the plant exposed to the altered radiation condition has a concentration of a glucosinolate that is greater than a concentration of glucosinolate in a control plant that is exposed to white light for a light photoperiod of about 8 consecutive hours for each 24 hours. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A method for growing a plant comprising:
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providing a plant that is a member of the order Capparales;
exposing the plant to water deficit conditions until a leaf of the plant begins to wilt;
watering the plant daily for three days, wherein the plant exposed to the water deficit conditions has a concentration of a glucosinolate that is greater than a concentration of the glucosinolate in a control plant not exposed to the water deficit conditions. - View Dependent Claims (11, 12, 13, 14)
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15. A method for growing a plant comprising:
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providing a plant that is a member of the order Capparales;
exposing the plant for about one week to a temperature of less than about 25°
C., wherein the plant exposed to the temperature has a concentration of a glucosinolate that is greater than a concentration of the glucosinolate in a control plant exposed to a temperature of 25°
C. or greater for about one week. - View Dependent Claims (16, 17, 18, 19, 20, 21)
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22. A method for growing a plant comprising:
exposing a plant that is a member of the order Capparales to a composition comprising nitrogen and sulfur, wherein sulfur is applied at a rate that is about 100% greater than a recommended rate, wherein nitrogen is applied at a rate that is about 30% lower than a recommended rate, and wherein the plant exposed to such altered application rates has a concentration of a glucosinolate that is greater than a concentration of the glucosinolate in a control plant exposed to recommended rate or nitrogen and sulfur. - View Dependent Claims (23, 24, 25, 26)
Specification