Disclosed are methods to convert nitrogen in a wastewater stream to an arginine-enriched polypeptide, which includes supplying a nitrogen-enriched wastewater stream; culturing an organism in the waste stream that produces an arginine-enriched polypeptide to produce the arginine-enriched polypeptide; and removing the produced arginine-enriched polypeptide from the wastewater stream to create a processed wastewater stream. The methods also include a method to make an arginine-enriched polypeptide enriched fertilizer by flowing the effluent from the culturing step over a cation exchange material to allow binding of the arginine enriched polypeptide to the cation exchange material; and collecting arginine-enriched polypeptide to form the arginine-enriched polypeptide enriched fertilizer. The method also includes enhancing the growth or production of a plant using the fertilizer containing the arginine-enriched polypeptide.

Provided is an agent for promoting root nodule formation, which contains cinnamic acid or hydroxycinnamic acid as an active ingredient.

Provided is an agent for promoting root nodule formation, which contains cinnamic acid or hydroxycinnamic acid as an active ingredient.

The present invention provides compositions and methods for detecting Candidatus liberibacter infection and Huanglongbing disease in a citrus plant by detecting the expression of small RNAs such as miRNA and siRNA. The invention also provides methods for treating Huanglongbing disease in a citrus plant by contacting the plant with a phosphorus containing solution.

The present invention provides compositions and methods for detecting Candidatus liberibacter infection and Huanglongbing disease in a citrus plant by detecting the expression of small RNAs such as miRNA and siRNA. The invention also provides methods for treating Huanglongbing disease in a citrus plant by contacting the plant with a phosphorus containing solution.

A method for promoting mycorrhizal symbiosis between a plant and a fungus includes using micropeptides (peptides encoded by microRNAs or miPEPs).

A method for promoting mycorrhizal symbiosis between a plant and a fungus includes using micropeptides (peptides encoded by microRNAs or miPEPs).

The present invention relates to a nucleic acid molecule encoding a polypeptide conferring resistance to a plant against a fungal pathogen, such as Helminthosporium turcicum. The present invention further relates to a plant (or part thereof) comprising the nucleic acid molecule, and methods involving the nucleic acid molecule.

The present invention provides an altered Gypsophila plant comprising a flower having an altered phenotype, wherein the flower having an altered phenotype comprises an elevated amount of Beta-Carotene, wherein the elevated amount of Beta-Carotene is at least twice the concentration of Beta-Carotene compared to the concentration of Beta-Carotene in a control Gypsophila flower and to methods for selecting altered Gypsophila plants.

The present invention provides an altered Gypsophila plant comprising a flower having an altered phenotype, wherein the flower having an altered phenotype comprises an elevated amount of Beta-Carotene, wherein the elevated amount of Beta-Carotene is at least twice the concentration of Beta-Carotene compared to the concentration of Beta-Carotene in a control Gypsophila flower and to methods for selecting altered Gypsophila plants.