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#26 Re: Life support systems » Physiology of Martian crops » 2020-12-02 04:48:53

If you want to fix more CO2, I suggest the use of C4 crops like corn and sorghum. I know photorespiration, is a process in fixing CO2 when there is a high concentration of oxygen in the environment. Their product is toxic in plants such as glyoxylate. And, it causes more energy to utilize the glyoxylate. It is not recommended that there is a high concentration of oxygen in the plant environment. It could lower the yield and waste more energy from light.

The challenges in C4 plants are how to increase the edible yield of a crop like what kind of utilization we should do in stems, leaves, and cob. We should utilize every part of the plants to minimize waste.

I have an idea about photosynthesis because I enrolled a "Plant Photophysiology" course in my Master's degree.

#27 Re: Life support systems » Space Medicine » 2020-12-02 04:39:26

Speaking about facts, what are the common health issues experienced by the astronaut in space? What I know about their sickness is muscle dystrophy, and the vision was affected by microgravity due to the changes of pressure in the eye. We need to list down the health issues and look for plants that have medicinal properties to treat that sickness.

Kindly share with me a scientific paper or review paper about the health issues in space.

#28 Re: Life support systems » Spirulina » 2020-12-02 04:30:53

I support Spirulina culture as algal food in space. I tasted Spirulina cookies at my university.

#29 Re: Life support systems » What Biome's are needed on Mars » 2020-12-02 04:26:44

SpaceNut wrote:

You are more than welcome jfenciso hope you give a shout for what you do with your Botany knowledge as we could use such for aiding in planning mars to stay sustainable from the start.
Researchers compile world's largest inventory of known plant specieshttps://scx1.b-cdn.net/csz/news/800/2020/germanresear.jpg

Researchers at Leipzig University and the German Centre for Integrative Biodiversity Research (iDiv) have compiled the world's most comprehensive list of known plant species. It contains 1,315,562 names of vascular plants, thus extending the number by some 70,000—equivalent to about 20%. The researchers have also succeeded in clarifying 181,000 hitherto unclear species names.

So we can identify them but what are the valuable characteristics that make them what we want for Mars or for a lunar under ground colony....

Space Nut, is there a final update about the proposed habitat on Mars? What I mean, is it dome-designed or an underground-designed home? We need to find out which plants are suited for the room space based on the proposed design.

#30 Re: Life support systems » What Biome's are needed on Mars » 2020-12-02 04:23:19

tahanson43206 wrote:

For jfenciso re #14

It is good to see your ID active in the forum once again!

Because of your interest in plants, I am hoping you will take a look at the Mars University video recently published by the Mars Society. 

The link is available here: http://newmars.com/forums/viewtopic.php … 59#p174359

One of the leading members of the staff has a PhD in agriculture related disciplines.

The Mars U organization is seeking students for a summer program next year, and they are offering scholarships.

Also ... the forum has changed from open registration to by-invitation-only.

You are an "approved" member and therefore you can nominate a person to become a member.

If you know someone who you think would be willing to contribute to the forum, please post a note to SpaceNut in the Recruiting topic.

(th)


Hello Tahanson, I don't know any person in my place who has an interest in either Space Farming, Astrobotany or Astroagronomy.

What do you mean I am an approved member? big_smile By the way, I don't know if I am qualified to join Mars University to study Space Farming. My M.Sc. degree has not yet finished.

#31 Re: Life support systems » What Biome's are needed on Mars » 2020-11-28 23:44:03

SpaceNut wrote:

This is information from a Mars paper SUSTAINABLE HABITAT DEVELOPMENT that talks of what we need to sustain men on mars....

Thank you for sharing this paper, SpaceNut.

#32 Re: Life support systems » Physiology of Martian crops » 2018-11-22 21:16:32

First, you can isolate but not feasible to do that in space. Second, chloroplast can't survive without the nucleus. Metabolic activity in the chloroplast happens because of the enzymatic reaction. Some enzymes in the chloroplast, the genetic information came from the nucleus. Third, nucleus and chloroplast have an interaction by giving a molecular signal in order to maintain the cellular activity inside the cell. If you prefer to fix more CO2, I recommend the use of microalgae as a source of O2 and food. To screen a candidate microalgae, research about their ecophysiology or high amount of carbonic anhydrase of different microalga species. Carbonic anhydrase is an enzyme which fixed more CO2.

#33 Re: Life support systems » Crop production and food variety » 2018-10-29 23:01:14

Terminologies in dictionary define generally which explain in layman's term. I prefer textbook written by the expert in the discipline. smile
Brady is a known soil scientist in the world, and he made a several edition of the book for update. big_smile

#34 Life support systems » Utilization and Issues of Algae for Martian Colonization » 2018-10-29 05:29:56

jfenciso
Replies: 18

Share your insights about utilization and issues of algae for Martian colonization.

#35 Life support systems » Space Medicine » 2018-10-29 05:25:05

jfenciso
Replies: 38

This thread will be used to talk about possible health issue of the Martian settlers. We shouldn't set aside this kind of issue.

#36 Life support systems » Physiology of Martian crops » 2018-10-29 05:21:08

jfenciso
Replies: 31

You can share your insights about why studying physiology of the crop is an important factor for human survival.

#37 Re: Life support systems » Crops » 2018-10-29 05:16:20

Therefore, we should plant soybeans and chili for condiments. Don't forget the Brasicca, we should ferment it to Kimchi! big_smile

Talking about native garlic, my roommate in a dormitory is working his study about propagation of native garlic using Plant Tissue Culture. I am waiting for the results of his experiment. big_smile

#38 Re: Life support systems » China's "Space Vegetables" » 2018-10-29 05:11:09

I can't believe that the previous post was 2005 and I replied this 2018. #LOL big_smile

#39 Re: Life support systems » Current experiments on algea, lichen etc.? - Anybody doing this stuff » 2018-10-29 05:09:57

Working an algae as source of fuels takes more time to do the study. That is the reason why we don't have an established alternative fuel, to avoid the utilization of fossil fuel. Maybe, through genetic engineerting, this could help to develop a high quality of fuel.

#40 Re: Life support systems » Nutrient Management in Closed system for Martian Greenhouse » 2018-10-29 05:05:57

RobertDyck wrote:

You realize gamma rays, UV, X-rays, and cosmic rays are non-infectious.

I never said that gamma rays are non-infectious. What I mean was space radiation is detrimental to settler's health. If you will collect Martian regolith and bring it inside the colony for planting, the regolith will emit a radiation. We should minimize the health risk of the settlers because of radiation. Cosmic rays and gamma rays have a high energy which can damage the DNA. Once the DNA was damaged in the particular tissue, the normal tissue will turn into cancerous tissue. There is no treatment for cancer in Mars. We should avoid the health risk for the future Martian settlers.

It is a challenge for the engineers to make a suit which protects the settlers in space radiation like cosmic rays.

#41 Re: Life support systems » What would be the best method of maintaining fertile fields? » 2018-10-29 04:58:47

a thing that holds the plant in hydroponics is called "Wick system", to reduce the shipping mass, I recommend the use of coconut husk, we call it coco coir. They are lightweight compared to vermicullite or perlite.

#42 Re: Life support systems » Space Plant Pathology » 2018-10-29 04:51:50

louis wrote:

Horticultural workers are certainly vulnerable to lung infections from bacteria I believe.



jfenciso wrote:

What would you do if your crop planted inside the Martian greenhouse will be infected with plant pathogens? And, how would be affected in a closed system environment like a Martian colony?


Most horticulturists experience health risks because of the exposure of chemicals like synthetic phytohormones or growth retardants.

#44 Re: Life support systems » Crop production and food variety » 2018-10-29 04:47:11

For clarification

"Soil vs. Regolith"

According to the textbook of Brady entitled "The Nature and Properties of Soils" (Holy Bible of Soil Science big_smile)

Regolith defines as unconsolidated material overlying rocks.

Soil defines as the upper and biochemically weathered portion of the regolith.

#46 Re: Life support systems » What would be the best method of maintaining fertile fields? » 2018-10-28 12:57:47

Oldfart1939 wrote:

My point is the overall elemental availability in Martian regolith.

By the way, one of my worries is the Martian regolith they have a radiation like Gamma rays. Utilizing collected Martian regolith for planting could affect the growth of the plant and dangerous to settlers also, which could increase the health risk.

If we talk hydroponics, lots of mineral salts supply must be transported in Mars and the Martian settlers will be the one to prepare a nutrient solution like "modified Hoagland's solution".

#47 Re: Life support systems » Nutrient Management in Closed system for Martian Greenhouse » 2018-10-28 12:48:00

Why do we need to study the nutrient management in Mars?

Remember:
Liebig's Law of the Minimum states that yield is proportional to the amount of the most limiting nutrient, whichever nutrient it may be. From this, it may be inferred that if the deficient nutrient is supplied, yields may be improved to the point that some other nutrient is needed in greater quantity than the soil can provide, and the Law of the Minimum would apply in turn to that nutrient.

This law will apply in Martian agriculture.

#48 Re: Life support systems » Genetic Engineering on Martian crops » 2018-10-28 12:39:19

IanM wrote:

You could try to increase the primary productivity per flux density, or try to make C3 plants into C4 plants.

Currently, I am following the research project from the International Rice Research Institute (IRRI). They established a research project entitled "The C4 Project". A genetic engineering where the carbon dioxide concentrating mechanism (CCM) of rice is C3 will be converted in C4 CCM just like corn.

This project will help to make a new variety of rice that will be planted in drought and high-temperature condition.

#49 Re: Life support systems » Space Plant Pathology » 2018-10-28 12:19:56

In study on ISS using VEGGIE Hardware, there is a mold developed in the crop and flowering plant. So, it is possible that plant disease will happen in Mars.

#50 Re: Life support systems » Space Plant Pathology » 2018-10-28 12:17:06

Yeah, it couldn't be, but it would reduce the production of food. Tackling this kind of issue would help to know what are the possible way to prevent this kind of issue in the future.

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